17.5" (4/1/95): faint, edge-on 7:1 SSW-NNE, 3.0'x0.4', low surface brightness, very slightly brighter elongated core. A mag 14 star is 2.3' SE of center. N3507 lies 12.7' NE.
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NGC 3502 = N3479: = MCG -02-28-027 = PGC 33053
10 58 55.4 -14 57 41

See description for N3479.

Leavenworth's rough position (I) matches M-02-28-041 in RA but is 50' too far N. This is the identification used in RNGC, but the Leander-McCormick positions are generally fairly accurate in declination but off several tmin in RA. Corwin feels a more like identification is N3502 = N3479. Both of these entries are from volume 1 of the Leander-McCormick catalogue (Leavenworth and Stone) and differ only in RA by 4 tmin.
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NGC 3503 = ESO 128-EN28 = OCL-833 = Pismis 17
11 01 17 -59 50.7
Size 3

24" (4/5/08 - Magellan Observatory, Australia): The brightest section of this nebulosity surrounds a group of 5 stars consisting of a single brighter star with a faint, close companion and three additional stars in a string. Several additional faint stars spiral out from the grouping. The haze that surrounds these 5 stars is ~3' in diameter. There was little or no contrast gain using a UHC filter, so the nebulosity must not have a significant emission component. Situated in a rich star field.
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NGC 3504 = UGC 06118 = MCG +05-26-039 = CGCG 155-049 = PGC 33371
11 03 11.2 +27 58 20
V = 11.0; Size 2.7x2.1; Surf Br = 12.8

17.5" (3/25/95): bright, large, elongated 2:1 NNW-SSE, 2.5'x1.2'. The halo has a fairly high irregular surface brightness. Sharp concentration with a very small well-defined dominating core. The bright core appears offset to the south side with the halo more extensive to the north. Two mag 14 stars lie 1.7' NNW (45" separation). First of three with N3512 12' ENE and N3515 24' NE.

Discovered by WH (I 88). JH made no less than 7 observations in the Slough Catalogue (h810). The RA in the RNGC is 1.0 tmin too far E and the galaxy is misplotted on the first version of U2000 (later fixed). Also see N3506.
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NGC 3505 = N3508? = MCG -03-28-031 = IC 2622
11 02 59.7 -16 17 19
Size 1.0x0.9

See observation of N3508.

Discovered by JH at the Cape (h3312). There are two mag 14.5-15 GSC stars about 1' NE and 1' SE of h's place which are possible candidates. In NGCBUGS, Corwin suggests this may be a duplicate observation of N3508 based on the description, although the declination is significantly off (over 45'). Not found by Dorothy Carlson.
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NGC 3506 = UGC 06120 = MCG +02-28-047 = CGCG 066-105 = PGC 33379
11 03 12.9 +11 04 37
V = 12.5; Size 1.2x1.1; Surf Br = 12.6

17.5" (4/22/95): fairly faint, round, 1.0' diameter. Just a weak central brightening with no distinct core or nucleus. Preceded by a trio of mag 13.5 stars within 4'.

17.5" (3/28/87): fairly faint, fairly small, roundish, slightly brighter core. A triangle of mag 13 stars is just west.

Discovered by WH (III 22). JH's mean position (h811) from three observations matches U06120 = M+02-28-047 = CGCG 66-105. The RA in the RNGC is 1.0 tmin too far E and the galaxy was misplotted in the first printing of U2000 (based on the RNGC error). Also see notes for N3504.
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NGC 3507 = UGC 06123 = MCG +03-28-053 = CGCG 095-100 = PGC 33390
11 03 25.6 +18 08 08
V = 10.9; Size 3.4x2.9; Surf Br = 13.3; PA = 110d

17.5" (4/1/95): unusual appearance as a bright mag 10.5 star is superimposed very close to the center! Fairly faint, moderately large, 2.5' diameter, irregularly round. The core is difficult to view but is located just 30" SW of the superimposed star and the galaxy is slightly offset to the west side of the star. N3501 lies 12.7' SW.
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NGC 3508 = MCG -03-28-031 = IC 2622 = N3505: = PGC 33362
11 02 59.7 -16 17 19
V = 13.2; Size 1.0x0.9; Surf Br = 12.9; PA = 15d

18" (3/13/04): fairly faint, fairly small, round, 0.7' diameter, even surface brightness. A mag 13 star is attached on the NNE tip of the galaxy. At times the galaxy appears slightly elongated N-S, ~1.0'x0.7' and the DSS image confirms this impression. Observation made through thin clouds. This is a starburst and luminous infrared galaxy with an active nucleus.

Discovered by WH (II 507) and described simply as "F. S. E." Reobserved by JH (h814) and his position matches MCG -03-28-031. Interestingly, he described this galaxy as "vL". Swift's RA for IC 2622 is 0.5 tmin E and 3' N of MCG -03-28-031 although his description applies to this galaxy. Also see the N3505 identification which may be another observation of this galaxy.
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NGC 3509 = UGC 06134: = MCG +01-28-033 = CGCG 038-109 = Arp 335 = VV 75 = PGC 33446
11 04 23.6 +04 49 43
V = 12.7; Size 2.1x1.0; Surf Br = 13.4; PA = 40d

17.5" (4/1/95): fairly faint, moderately large, elongated 5:2 SSW-NNE, 1.6'x0.7'. Low surface brightness with a very weak concentration (no visible core). Difficult to determine outer extent of halo but appears to have an asymmetric shape (slightly curved?).

Discovered by WH (III 598). Observed only once and described as "eF, S, lE. I could not verify it." Not found by Bigourdan. In Scientific Papers, Dreyer states this number should probably be rejected "as there was fog which indeed was so strong as make everything swim to me." The NGC position is exactly 1.0 tmin W and 3' S of U06134 = M+01-28-033 = Arp 335. Sinnott claims the RNGC RA is incorrect (off by 1.0 tmin) but the RNGC RA matches U06134.
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NGC 3510 = UGC 06126 = MCG +05-26-040 = CGCG 155-050 = PGC 33408
11 03 43.6 +28 53 06
V = 12.2; Size 4.0x0.8; Surf Br = 13.3; PA = 163d

13.1" (3/24/84): faint, edge-on streak 4:1 NNW-SSE. Located 7.6' ESE of mag 7.3 SAO 81642 which interferes with viewing.
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NGC 3511 = ESO 502-013 = MCG -04-26-020 = UGCA 223 = PGC 33385
11 03 23.7 -23 05 11
V = 11.0; Size 5.8x2.0; Surf Br = 13.5; PA = 76d

17.5" (4/1/95): fairly bright, large, very elongated 3:1 WSW-ENE, 4.0'x1.4'. Broad concentration to a larger brighter core. Bracketed by a mag 13 star at the ENE end and a mag 14 star at the WSW tip. Forms a pair with N3513 10.8' SE. A mag 9.5 star (SAO 179479) is 5' S, roughly midway between the galaxies.
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NGC 3512 = UGC 06128 = MCG +05-26-041 = CGCG 155-051 = PGC 33432
11 04 02.9 +28 02 12
V = 12.3; Size 1.6x1.5; Surf Br = 13.1

17.5" (3/25/95): moderately bright, fairly small, 1.2' diameter, round, weak concentration with an irregular surface brightness. Second of trio with N3504 12' WSW and N3515 14' NNE. Surrounded by three mag 12-13 stars 2.9' N, 3.7' E and 2.1' SW.

8" (4/24/82): faint, small, round. Forms a pair with N3504 12' SW.
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NGC 3513 = ESO 502-014 = MCG -04-26-021 = UGCA 224 = PGC 33410
11 03 46.0 -23 14 38
V = 11.5; Size 2.8x2.2; Surf Br = 13.4; PA = 95d

17.5" (4/1/95): fairly faint, moderately large, 2.5'x2.0', irregular surface brightness, only a slight central brightening. A mag 13.5 star is 1.7' E of center. A line of three equally spaced mag 11 stars lies about 4' S. Forms a pair with N3511 10.8' NW.
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NGC 3514 = ESO 570-001 = MCG -03-28-035 = PGC 33430
11 03 59.9 -18 46 51
V = 12.8; Size 1.1x0.9; Surf Br = 12.7; PA = 115d

18" (3/5/05): faint, fairly small, elongated 3:2 ~E-W, 1.0'x0.7'. Broadly concentrated with a slightly brighter middle. Located 1.1¡ SE of mag 4.1 Alpha Crateris.
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NGC 3515 = UGC 06139 = MCG +05-26-044 = CGCG 155-055 = PGC 33467
11 04 37.3 +28 13 40
V = 13.9; Size 1.0x0.8; Surf Br = 13.5; PA = 55d

17.5" (3/25/95): very faint, fairly small, elongated 3:2 SW-NE, 0.8'x0.5', weak concentration. Located 13.7' NE of N3512.
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NGC 3516 = UGC 06153 = MCG +12-11-009 = CGCG 334-011 = PGC 33623
11 06 47.5 +72 34 07
V = 11.7; Size 1.7x1.3; Surf Br = 12.5; PA = 45d

17.5" (3/28/92): moderately bright but small, slightly elongated SW-NE, sharp small bright core dominates, fairly small halo. A mag 14 star is 1.2' SE. Two mag 10 stars lie 2.3' NE and 4.1' W. This is a Seyfert galaxy.
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NGC 3517 = UGC 06144 = MCG +10-16-057 = CGCG 291-027 = PGC 33532
11 05 36.9 +56 31 28
V = 13.0; Size 0.9x0.8; Surf Br = 12.5; PA = 120d

17.5" (3/12/88): fairly faint, fairly small, round, diffuse edges, broad concentration.
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NGC 3518 = MCG -01-26-014 = N3110 = N3122 = PGC 33442
10 04 02.0 -06 28 29

See observing notes for N3110. One hour error in RA in Stone's position.

Stone's very rough position in list I is 11 04.5 -06 34 (2000) although he mentions "In same field nebula discovered by Stephan". Corwin notes that none of Stephan's discoveries are within 5 degrees of Stones's rough position. Furthermore, the discovery sketch shows a double nebula with four stars nearby but there is nothing within several degrees that matches this description. Although, N3122 is located an hour of RA preceding Stone's position it matches his sketch! (one of the "stars" is MCG -01-26-013). The RNGC misidentifies N3518 with an anonymous galaxy at 11 04.3 -06 28. See NGCBUGS for the full story.
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NGC 3521 = UGC 06150 = MCG +00-28-030 = CGCG 010-074 = PGC 33550
11 05 49.2 -00 02 02
V = 09.0; Size 11.0x5.1; Surf Br = 13.2; PA = 163d

18" (5/14/07): very bright spiral with impressive structure, elongated at least 5:2 NNW-SSE, ~7.5'x3'. Contains a bright, elongated core highlighted by an intense, stellar nucleus. The halo is noticeably mottled at first glance and a dust lane runs NNW-SSE along the west side of the core. There is a strong impression of spiral structure with an arm attached on the east side that extends to the north and appears to curve towards the west in the outer halo. The halo appears more extensive or slightly brighter on the northern end. A more difficult arm appears to sweep to the south on the west side of the core.

17.5" (1/19/91): very bright, very large, elongated 5'x2' NNW-SSE. This is an impressive galaxy! Contains a well-defined small bright oval core NNW-SSE and a stellar nucleus. Appears mottled near the core and on the west side. Along the west side is a dust lane evident as a sharp light cut-off. The west side is somewhat fainter due to dust but extends beyond the dust lane.

8": fairly bright, fairly large, elongated, bright core. Located 33' E of a mag 6 star.
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NGC 3522 = UGC 06159 = MCG +03-28-060 = CGCG 095-113 = PGC 33615
11 06 40.4 +20 05 08
V = 13.1; Size 1.2x0.7; Surf Br = 13.0; PA = 117d

18" (5/31/03): fairly faint, fairly small, elongated 5:3 WNW-ESE, 0.7'x0.4'. Fairly sharply concentrated with a brighter 15" round core.
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NGC 3523 = UGC 06105 = MCG +13-08-053 = CGCG 351-054 = PGC 33367
11 03 06.3 +75 06 57
V = 12.9; Size 1.3x1.3; Surf Br = 13.3

18" (3/30/05): fairly faint, moderately large, round, 1.2' diameter. Symmetrical appearance with a weak even concentration to the center but no defined core. N3500 lies 7.2' NW.

17.5" (4/25/98): extremely faint, fairly small, round, 45" diameter, low even surface brightness. Collinear with two mag 11 stars 5' ESE and 9' ESE. Brightest in trio with N3465 14.5' WNW and N3500 7' NW. Observation severely hampered by poor transparency.
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NGC 3524 = UGC 06158 = MCG +02-28-050 = CGCG 066-112 = PGC 33604
11 06 32.1 +11 23 08
V = 12.8; Size 1.6x0.5; Surf Br = 12.4; PA = 14d

17.5" (4/1/95): moderately bright, elongated 5:2 SSW-NNE, 1.5'x0.6'. Fairly sharp concentration with a well-defined 15" bright core and an occasional stellar nucleus. A mag 11.5 star lies 0.9' NNW and a mag 13 star 2.0' NNW of center.
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NGC 3525 = N3528 = N3497 = IC 2624 = E570-006 = MCG -03-28-037 = PGC 33667
11 07 18.1 -19 28 19

See observing notes for N3528

Discovered by Stone (list I). His very rough position is only 0.7 tmin W (only 1' off in dec) of E570-006 = M-03-28-037. The same galaxy was observed by WH (III 824 = N3497), JH (h3316 = N3528) and Swift (IC 224) so it received 4 NGC/IC designations!
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NGC 3526 = UGC 06167 = MCG +01-28-039 = CGCG 038-129 = N3531 = PGC 33635
11 06 56.3 +07 10 23
V = 13.2; Size 1.9x0.4; Surf Br = 12.8; PA = 55d

17.5" (4/1/95): fairly faint, nearly edge-on 4:1 SW-NE, 2.0'x0.5', very weak concentration. A mag 13 star is just off the SW end 1.3' from center. Located 12' ENE of mag 8.3 SAO 118656 (at the W edge of the field).
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NGC 3527 = UGC 06170 = MCG +05-26-059 = CGCG 155-066 = PGC 33669
11 07 18.2 +28 31 39
V = 13.7; Size 1.0x0.9; Surf Br = 13.5

13.1" (3/24/84): very faint, very small, round, smooth surface brightness. A mag 12 star is 2.1' WNW.
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NGC 3528 = N3525 = N3497 = IC 2624 = E570-006 = MCG -03-28-037 = PGC 33667
11 07 18.1 -19 28 17
V = 11.9; Size 2.6x1.4; Surf Br = 13.2; PA = 59d

17.5" (5/4/02): moderately bright, fairly large contains a bright core ~45" diameter increasing to a stellar nucleus. Surrounding the core is a fairly large ill-defined halo elongated 3:2 SW-NE, ~2.5'x1.5' with a low surface brightness. A couple of faint stars are superimposed on the south side. This galaxy may hold the record for the most NGC/IC aliases as N3528 = N3525 = N3497 = IC 2624. Forms a pair with N3529 5' S.

JH's position (h3316) is just 6 tsec far W of ESO 570-006 = MCG -03-28-037. This galaxy is identified as N3497 in the RC3 which is the NGC number for William Herschel's earlier observation (III 824) though with a poor position. In Scientific Papers of WH, Dreyer notes that WH's position for III 824 = N3497 had an error of 6 tmin in RA and is identical to h3316 = N3528. Swift's duplicate observation for IC 2624 placed this galaxy 5' too far S although it was correctly described as the N of two. Finally, Stone's duplicate observation (N3525) also refers to this galaxy! So there is a total of 4 NGC/IC equivalences with this single galaxy.
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NGC 3529 = ESO 570-007 = MCG -03-28-038 = IC 2625 = PGC 33671
11 07 19.1 -19 33 20
V = 14.2; Size 1.4x1.1; Surf Br = 14.5; PA = 55d

17.5" (5/4/02): fairly faint, fairly small, slightly elongated with very faint extensions suspected at moments, ~45"x35", very weak concentration. Forms a pair with N3528 = N3525 = N3497 just 5' N.
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NGC 3530 = UGC 06188 = MCG +10-16-064 = CGCG 291-030 = PGC 33766
11 08 40.4 +57 13 48
V = 13.8; Size 0.6x0.3; Surf Br = 11.7; PA = 99d

17.5" (3/12/88): fairly faint, very small, elongated ~E-W, bright core, probable stellar nucleus.
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NGC 3531 = N3526 = U06167 = MCG +01-28-039 = CGCG 038-129 = PGC 33635
11 06 56.3 +07 10 23

See observing notes for N3526.

Discovered by Holden. In the IC I notes, Spitaler equates N3531 with Marth's N3526 (visual descriptions are nearly identical). RNGC does not note this equivalence. See NGCBUGS.
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NGC 3532 = ESO 128-SC31 = Cr 238
11 05 48 -58 46.2
V = 3.0; Size 55

13.1" (2/18/04 - Costa Rica): this amazing naked-eye cluster packs several hundred stars, filling the 20 Nagler field (74x and 65' field of view) with wall-to-wall stars in a 55'x35' region! The central region is condensed and quite rich with several dense knots consisting of pairs, triples, chains, etc. The brighter stars are extended ~E-W, although there is no well-defined edge to this huge cluster. There is a huge "U" shaped chain of stars around the periphery including a bright star on the SE end. A neat equal mag equilateral triangle of stars stood out within the maze of stars. The cluster is quite prominent naked-eye as a 45' cloud just 3¡ ENE of Eta Carina in the NE corner of the rich Carina starcloud. It is densely packed with dozens of resolved stars in the 9x50 finder. Mag 3.9 V382 Carinae is off the SE side.

18" (7/7/02 - Magellan Observatory, Australia): This spectacular naked-eye and binocular cluster (3¡ ENE of Eta Carina) and fills the entire 51' field of the 27 Panoptic (76x) with several hundred stars mag 7 and fainter. It is unusually elongated ~E-W, perhaps 55'x30' and widening on the following side. The stars are irregularly distributed with many in pairs, small groups, chains and loops. A group of about a dozen stars form a perfect "S" asterism. Interestingly, there is a lack of dense knots although the entire central region is rich. Many of the stars appear to have a blue or yellowish tint. This is one of the top open clusters in the sky although it is probably best in a wider field view.
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NGC 3533 = NGC 3557A = E377-011 = MCG -06-25-002 = AM 1104-365 = LGG 229-009 = PGC 33647
11 07 07.5 -37 10 22
V = 12.9; Size 2.8x0.6; Surf Br = 13.4; PA = 65d

13.1" (2/17/04 - Costa Rica): fairly faint, moderately large, elongated 5:2 or 3:1 WSW-ENE, low fairly even surface brightness with just a weak, broad concentration. A mag 14 star is just N of the ENE tip. First in the N3557 group (40' NW of N3557).
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NGC 3534 = UGC 06190 = MCG +05-26-062 = CGCG 155-072 Ho 229a = PGC 33782
11 08 55.6 +26 36 38
V = 14.2; Size 1.3x0.4; Surf Br = 13.4; PA = 92d

17.5" (4/22/95): very faint, fairly small, elongated 2:1 E-W, 1.0'x0.5', broad weak concentration. A mag 9.5 star is 4.3' NW. This is a double system with separation 0.9' between centers (not resolved) and forms a triplet with MCG +05-26-064 2.9' ENE (observed).
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NGC 3535 = UGC 06189 = MCG +01-29-004 = CGCG 039-010 = NPM1G +05.0287 = PGC 33760
11 08 34.0 +04 49 55
V = 13.5; Size 1.1x0.5; Surf Br = 12.6; PA = 178d

17.5" (3/22/96): faint, small, round, 30" diameter, brighter core. A mag 15 star is just 43" E of center.
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NGC 3536 = UGC 06191 = MCG +05-26-061 = CGCG 155-073 = NPM1G +28.0186 = PGC 33779
11 08 51.2 +28 28 32
V = 13.7; Size 1.1x0.8; Surf Br = 13.5; PA = 155d

17.5" (4/22/95): very faint, round, 40" diameter, low even surface brightness. The 20' field has only a half dozen stars. N3539 lies 12.3' NNE. Probable member of Abell Galaxy Cluster 1185 and located about 30' SW of the core of the cluster.
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NGC 3537 = PGC 33752 = PGC 33753
11 08 26.6 -10 15 25
V = 12.8; Size 1.5x1.3; Surf Br = 13.4

17.5" (5/4/02): fairly faint, fairly small, irregularly round, ~1.0'x0.8', moderate surface brightness, weak concentration to an irregular nucleus. This is a double system with a superimposed companion on the south side. Located 8' W of mag 8.7 SAO 138012. N3527 is misidentified in the RNGC and MCG as MCG -02-29-003 which is located 14' S (see visual observation).

Described by Common as "2 stars inv in haze, Pos. 160 deg." The NGC position (from micrometric observations from Tempel) is an exact match with a double galaxy at GSC position 11 08 26.6 -10 15 25.0 (on the preceding galaxy) and this is probably also Common's object. RNGC and MCG both misidentify N3537 as M-02-29-003 at 11 08.5 -10 30. See NGCBUGS for further discussion.
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NGC 3539 = MCG +05-26-065 = CGCG 155-077 = PGC 33799
11 09 08.9 +28 40 20
V = 14.5; Size 1.1x0.2; Surf Br = 12.9; PA = 3d

17.5" (4/22/95): very faint, fairly small, very elongated 3:1 N-S, 0.6'x0.2'. Contains a small bright core with very faint extensions. N3536 lies 12.3' SSW. Member of Abell Galaxy Cluster 1185.
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NGC 3540 = UGC 06196 = MCG +06-25-011 = CGCG 185-011 = NPM1G +36.0243 = N3548 = PGC 33806
11 09 16.1 +36 01 15
V = 13.3; Size 1.4x1.2; Surf Br = 13.7

17.5" (4/22/95): fairly faint, fairly small, round, small bright core. Located 8' E of mag 7.3 SAO 62421 and 17' S of mag 5.7 SAO 62427.
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NGC 3541 = MCG -02-29-003 = NPM1G -10.0373 = PGC 33759
11 08 32.2 -10 29 30
V = 14.5; Size 1.3x1.2; Surf Br = 14.8

17.5" (5/4/02): very faint, fairly small, round, 0.5' diameter. Has a much lower surface brightenss than N3537 14' N. The NGC identification is very uncertain due to an imprecise position by Common and N3541 may apply to MCG -02-29-004 28' SSE. This galaxy is identified as N3537 in MCG and RNGC.

Discovered by Common and described as "Nebulous star, B centre." The rough discovery position is 12' N of M-02-29-004 and 15' S of M-02-29-003, which are both possible candidates. Corwin feels that based on the description M-02-29-003 is more likely. This galaxy is identified as N3537 in MCG and RNGC. RNGC lists this entry as nonexistent. See NGCBUGS.
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NGC 3542 = MCG +06-25-013 = CGCG 185-013 = PGC 33868
11 09 55.5 +36 56 47
V = 14.1; Size 0.8x0.3; Surf Br = 12.5; PA = 45d

17.5" (3/12/94): faint, small, elongated 2:1 SW-NE, low surface brightness, no concentration. Forms a trio with N3545 3.5' ENE and MCG +06-25-014 3.3' N. MCG +06-25-015 is at the edge of the field 11' N.
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NGC 3543 = UGC 06213 = MCG +10-16-075 = CGCG 291-034 = PGC 33953
11 10 56.5 +61 20 49
V = 14.1; Size 1.3x0.2; Surf Br = 12.5; PA = 8d

17.5" (3/19/88): faint, moderately large, edge-on 5:1 ~N-S. A wide pair of mag 14 stars at 51" separation lie 2' NE.
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NGC 3544 = N3571 = E570-011 = MCG -03-29-001 = PGC 34028
11 11 30.3 -18 17 23

See observing notes for N3571.

Discovered by Stone (I). His rough position is 2 tmin W (typical error) of N3571 = E570-011 = M-03-29-001 and his listed position angle is a perfect match. This galaxy was originally discovered by WH (II 819) although RC3 uses N3544 as the primary designation.
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NGC 3545 = MCG +06-25-016/-017 = CGCG 185-015 = VV 182 = NPM1G +37.0304 = PGC 33893
11 10 12.3 +36 57 53
V = 13.8; Size 0.7x0.3

17.5" (3/12/94): faint, small, round, 40" diameter, slight even concentration. Forms a trio with N3542 3.5' WSW and MCG +06-25-014 4.7' NW. MCG +06-25-015 lies 10.5' NNW. This is a double system with components separated by just 13" (oriented SW-NE).
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NGC 3546 = MCG -02-29-007 = NPM1G -13.0315 = PGC 33846
11 09 46.8 -13 22 50
V = 13.3; Size 1.5x0.9; Surf Br = 13.5; PA = 100d

17.5" (5/4/02): faint, very small, slightly elongated, 25"x 20", stellar nucleus. Apparently I picked up the core region only as the arms have a much lower surface brightness.
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NGC 3547 = UGC 06209 = MCG +02-29-007 = CGCG 067-019 = PGC 33866
11 09 55.9 +10 43 14
V = 12.8; Size 1.9x0.9; Surf Br = 13.3; PA = 7d

17.5" (3/28/87): fairly faint, moderately large, elongated N-S, bright core. Possible member of the Leo group.
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NGC 3548 = N3540 = U06196 = MCG +06-25-011 = CGCG 185-011 = NPM1G +36.0243 = PGC 33806
11 09 16.1 +36 01 15

See observing notes for N3540.

JH's position for h827 is 1.0 tmin E of his own N3540 (given an accurate position) and the descriptions are very similar (discovered on different sweeps). Not found by Bigourdan at Hershel's place. This galaxy is listed as identical to N3540 in RNGC. See NGCBUGS for more.
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NGC 3549 = UGC 06215 = MCG +09-18-097 = CGCG 267-047 = PGC 33964
11 10 56.8 +53 23 17
V = 12.1; Size 3.2x1.2; Surf Br = 13.4; PA = 38d

17.5" (4/22/95): fairly bright, moderately large, elongated 5:2 SW-NE, 2.6'x1.0', broad concentration. The ends fade into the background but do not taper giving a boxy impression. Three collinear mag 13.5 stars nearly parallel the galaxy off the SE side. The nearest is 1.7' ESE of center.
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NGC 3550 = UGC 06214 = MCG +05-27-002 = CGCG 155-082 = CGCG 156-003 = PGC 33927
11 10 38.5 +28 46 04
V = 13.3; Size 1.1x1.0; Surf Br = 13.2

13.1" (3/24/84): brightest in the Abell Galaxy Cluster 1185 cluster. Faint, small, round. A mag 11 star is 1.5' E and a mag 12 star1.5' SSW. N3552 lies 4.7' SSE.
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NGC 3551 = CGCG 125-032 = NPM1G +22.0318 = Ho 230b = PGC 33825
11 09 42.8 +21 44 07
Size 0.2x0.2

17.5" (4/15/99): extremely faint, very small, possibly elongated but difficult to confirm, 20" in diameter. Could not resolve this double system with certainty (or only viewed the brighter component). Located 1.4' SSW of N3555.

17.5" (3/12/94): very faint, very small, round, fairly low even surface brightness. Forms a close pair with N3555 1.4' NNE. This is a double system [29" between centers] which was not resolved or only one component visible. Member of Abell Galaxy Cluster 1177.

Discovered by Swift (I). His position is 1.0 tmin E of CGCG 125-032 but similar in declination. His relative separation from N3555 is 10 tsec in RA and 0.5' S but if N3555 = U06203 then the actual separation is 3.2 tsec and 1' S. Corwin suggests that N3551 may instead be the brightest member of Abell 1177 (although described as fainter than N3555) and then N3555 = CGCG 125-034. This galaxy is mentioned in the notes of U06203 as 0.2x0.2 + 0.2x0.15 but it is not identified as N3551 in UGC or CGCG and not found in RC3, MCG or DSFG. The two galaxies are given separate positions in GSC at 11 09 41.2 +21 44 25 and 11 09 42.8 +21 44 07. RNGC (and PGC) identifies the western component as N3551. See NGCBUGS for discussion.
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NGC 3552 = MCG +05-27-004 = CGCG 155-085nf = CGCG 156-006nf = PGC 33932
11 10 42.9 +28 41 35
V = 14.6; Size 0.6x0.5; Surf Br = 13.1

13.1" (3/24/84): very faint, slightly brighter than N3553 very close SW just 44" from center. Located in the core of Abell Galaxy Cluster 1185.

Discovered by WH (III 352). This is the slightly brighter of a very close pair with N3553 (discovered by Bigourdan). Unfortunately, Bigourdan assigned N3553 to III 352 and Dreyer used his position so the NGC RA is out of order for N3552 and N3553. See NGCBUGS for a detailed discussion of the situation.
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NGC 3553 = MCG +05-27-003 = CGCG 155-085sw = CGCG 156-006sw = PGC 1842970

11 10 40.5 +28 41 06
V = 13.8; Size 0.6x0.6; Surf Br = 12.5

13.1" (3/24/84): very faint, extremely small. Located very close SW of N3552 (44" between centers). The pair is just resolved at 220x. Located in the core of rich cluster Abell Galaxy Cluster 1185.

Discovered by Bigourdan. He identified N3553 as III 352 = N3552 and called his "nova" N3552. The ID's given here follow historical precidence. See NGCBUGS for the complete story.
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NGC 3554 = MCG +05-27-007 = CGCG 155-086 = CGCG 156-007 = NPM1G +28.0187 = PGC 33948
11 10 47.9 +28 39 36
V = 14.4; Size 0.5x0.5; Surf Br = 12.7

13.1" (3/24/84): extremely faint and small. Located in the core of Abell Galaxy Cluster 1185 close SSE of the N3552/N3553 pair. Appears just non-stellar and near the visual threshold.
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NGC 3555 = UGC 06203 = MCG +04-26-035 = CGCG 125-033 = NPM1G +22.0319 = PGC 33836
11 09 44.4 +21 45 32
V = 12.8; Size 1.8x1.7; Surf Br = 14.0; PA = 30d

17.5" (4/15/99): brightest of trio with N3551 1.4' SSW and CGCG 125-034. Appears very faint, small, round, 0.7' diameter. Located 9' NW of three mag 9 stars which form a shallow arc. This galaxy is the brightest in Abell Galaxy Cluster 1177.

17.5" (3/12/94): faint, fairly small, round, 1.0' diameter, weak even concentration to brighter core and very small nucleus. A trio of mag 9 stars are in the field 8'-9' S including mag 8.9 SAO 81702 9.1' SE and mag 9.2 SAO 81700 8.7' SSE. Forms a close pair with N3551 1.4' SSW.

Discovered by Swift (I) as the NE of a pair with N3551. His RA is off by exactly 1.0 tmin from U06203 = M+04-26-035. This galaxy is identified as N3555 in RNGC and PGC but not UGC, MCG or CGCG. As N3551 (placed close SW by Swift) is 1.5' SW from this object, the identification appears OK. See NGCBUGS for an alternate interpretation of the identifications.
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NGC 3556 = M108 = U06225 = MCG +09-18-098 = CGCG 267-048 = CGCG 268-001 = PGC 34030
11 11 31.8 +55 40 14
V = 10.0; Size 8.7x2.2; Surf Br = 13.1; PA = 80d

18" (5/14/07): very bright, very large, elongated 4:1 WSW-ENE, ~8'x2'. This striking galaxy has a very mottled, patchy appearance with the main body appearing twisted or distorted. A few brighter patches or knots are visible along the major axis with a prominent knot along the west side. The core region is streaked with dust. The brightest portions of the two extensions have slightly different orientations or central axes! The galaxy bulges out a bit on the east end and the galaxy appears to bend a bit towards the north on the west end adding to the asymmetry. A couple of faint stars are superimposed on the eastern extension and close to the center is a prominent mag 12.5 star masquerading as a bright, stellar nucleus. The Owl Nebula, M97, lies 48' SE.

17.5" (2/25/84): very bright, very large, edge-on 4:1 WSW-ENE, 8.0'x2.0'. A mag 12 star is superimposed just west of center (V = 12.5) appearing similar to a bright stellar nucleus. Two fainter stars are also superimposed east of the core. A bright knot is visible west of the core (1.3' W of the star) and the region near the core appears dusty. A mag 12 star is just south of the west end, 4.9' from the center.

17.5" (3/12/88): very bright, very large, a bright star is superimposed near the center, knot visibile west of the core.

13" (2/25/84): fairly bright, very elongated, stellar nucleus.
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NGC 3557 = ESO 377-016 = MCG -06-25-005 = AM 1107-371 = LGG 229-003 = PGC 33871
11 09 57.6 -37 32 21
V = 10.4; Size 4.1x3.0; Surf Br = 13.1; PA = 30d

13.1" (2/17/04 - Costa Rica): fairly bright, fairly large, elongated 3:2 SSW-NNE, 2.5'x1.5'. Sharply concentrated with a prominent 40" core. With averted vision the diffuse outer halo extends to 3'x2' in size. A mag 10.5 star lies 3.3' SE. Brightest in a group including N3564 7.7' E and N3568 11.5' NE and part of the Hydra-Centaurus Supercluster.
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NGC 3558 = MCG +05-27-008 = CGCG 155-089 = CGCG 156-010 = Mrk 422 = PGC 33960
11 10 55.9 +28 32 37
V = 13.7; Size 0.9x0.8; Surf Br = 13.1

13.1" (3/24/84): this is the second brightest galaxy in the rich cluster Abell Galaxy Cluster 1185. Faint, very small, round. There is a string of four faint stars preceding.
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NGC 3559 = UGC 06217 = MCG +02-29-008 = CGCG 067-025 = PGC 33940
11 10 45.2 +12 00 58
V = 12.7; Size 1.3x0.9; Surf Br = 12.7; PA = 55d

17.5" (5/4/02): fairly faint, moderately large, elongated 3:2 SW-NE, 1.2'x0.8', fairly low surface brightness, brighter core. IC 2628 is located 14' NE.
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NGC 3560 = N3559 = U06217 = MCG +02-29-008 = CGCG 067-025
11 10 45.2 +12 00 58

See observing notes for NGC 3559.

Discovered by JH (h834). JH listed h834 = III 79 = N3560 in his 1833 Slough Catalogue although probably due to a digit error his declination was 50' too small. As JH listed h834 separately in GC (apparently overlooking his previous equivalence), Dreyer listed h834 = N3560 separately in the NGC. Corwin (see e-mail 8/10/95) identifies N3560 = h834 = III 79 = N3559 as JH originally stated. Reinmuth states "in Dreyer's place *16." Also listed as a star by Carlson. See NGCBUGS for full discussion.
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NGC 3561 = UGC 06224s = MCG +05-27-010 =CGCG 155-090s = CGCG 156-011s = VV 237 = Arp 105 = PGC 33991
11 11 13.3 +28 41 46
V = 13.9; Size 0.7x0.7; Surf Br = 13.0

13.1" (3/24/84): very faint, very diffuse spot with averted. This member of Abell Galaxy Cluster 1185 is slightly larger than most members. The dwarf galaxy "Ambartsumian's Knot" is located at the southern end of a plume extending from N3561.

This is a complex multiple system in Abell 1185 discovered by John Herschel (h835) who observed the brighter southern component in three different sweeps. Listed as N3561A/B in the RC3 (M+05-27-010, M+05-27-011), 0.7x0.7 and 0.9x0.9 although only the southern member should be credited to JH. The dwarf galaxy "Ambartsumian's knot" is located at the southern end of a plume extending from N3561b.
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NGC 3562 = UGC 06242 = MCG +12-11-011 = CGCG 334-013 = PGC 34134
11 12 58.7 +72 52 45
V = 12.2; Size 1.7x1.3; PA = 165d

17.5" (3/28/92): fairly faint, small, slightly elongated ~E-W, gradually brighter halo, small bright core. A mag 14.5 star is 1.2' NNE.
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NGC 3563 = UGC 06234 = MCG +05-27-013/14 = (CGCG 156-014) = NPM1G +27.0306 = Ho 234 = PGC 34025
11 11 25.3 +26 57 49
V = 13.7; Size 0.9x0.7; Surf Br = 13.0; PA = 15d

18" (5/31/03): faint, very small, round, 0.4' diameter. This is a double galaxy and a very compact companion was just resolved on the W edge. Located 3.3' S of mag 9.5 SAO 81711.
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NGC 3563A = (U06234) = (CGCG 156--014) = MCG +05-27-013 = Ho 234b = NPM1G +27.0305 = PGC 34012
11 11 23.8 +26 57 42
V = 15.0; Size 0.35x0.2

18" (5/31/03): this is the western component of a double system with larger and brighter N3563B. Appears as an extremely faint, round, "knot" (perhaps 10" diameter) just 17" W of center from N3563B.
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NGC 3564 = ESO 377-018 = MCG -06-25-006 = AM 1108-371 = LGG 229-004 = PGC 33923
11 10 36.4 -37 32 51
V = 12.1; Size 2.1x0.4; Surf Br = 12.3; PA = 15d

13.1" (2/17/04 - Costa Rica): fairly faint, fairly small, elongated 5:2 SSW-NNE, 1.4'x0.6', weak concentration and tapers at the ends (spindle-shaped). Follows N3557 by 7.7' in a group and bracketed by two mag 13 stars 2' NW and 2' SE.
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NGC 3565 = ESO 570-IG 008 = NPM1G -19.0363 = N3566: = PGC 33701
11 07 47.8 -20 01 18
V = 14.3; Size 0.7x0.5; Surf Br = 12.9; PA = 126d

18" (3/17/07): very faint, very small, slightly elongated, 20"x15". Located 13' WNW a mag 8.3 HD 96800. The identification of this galaxy with N3565 is not certain and the number (along with N3566) may apply to IC 2623 and a star just south. Listed as nonexistent in the RNGC.

Ormond Stone recorded a very faint pair of nebulae which he gave the same rough position 11 08± -19 46 (1950) in list I. Dreyer included these two objects as N3565 and N3566. ESO-Uppsala and RC3 both identify N3565 = N3566 = E570-IG008, an interacting double galaxy located at 11 05 19.7 -19 45 05.3 (1950), essentially two tmin W of Stone's position (typical error in the first discovery list). On the POSS, the images of these two small galaxies are merged and difficult to individually distinguish. So, it's possible that Stone observed this galaxy and a nearby faint star for his second object.

As Sulentic could not find any galaxy at Stone's original position on the POSS, he classified N3565 and N3566 as nonexistent in the RNGC. Assuming N3565 = N3566 = E570-IG8 with a two minute error in RA, the RNGC position for these objects should be changed to 11 06.6 -19 53 (1975). Listed as a single entry in ESGC and in ESO, RC3, ESGC and PGC. As an alternative, Corwin suggests that N3565 and 3566 may apply to IC 2623 and a star close S, though this requires a 4 tmin error in RA See RNGC Corrections #6 and NGCBUGS.
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NGC 3566 = N3565: = E570-IG008 = NPM1G -19.0363 = PGC 33701
11 07 47.8 -20 01 20
V = 14.3; Size 0.7x0.5; Surf Br = 12.9; PA = 126d

See observation of NGC 3565.

Discovered by Stone along with N3565 (see notes) in list I. Listed as nonexistent in RNGC. Not in DSFG.
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NGC 3567 = UGC 06230 = MCG +01-29-011 = CGCG 039-051 = PGC 34004
11 11 18.7 +05 50 10
V = 13.3; Size 0.9x0.7; Surf Br = 12.6; PA = 132d

18" (3/5/05): fairly faint, round, contains a relatively bright stellar or quasi-stellar nucleus surrounded by a round, faint halo. Forms a double system with MCG +01-29-012 39" SE.
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NGC 3568 = ESO 377-020 = MCG -06-25-009 = LGG 229-008 = PGC 33952
11 10 48.5 -37 26 52
V = 12.3; Size 2.5x0.8; Surf Br = 12.9; PA = 7d

13.1" (2/17/04 - Costa Rica): fairly faint, very elongated 7:2 N-S, 1.5'x0.4', fairly low even surface brightness. Cradled by a trio of mag 10-11 stars just following (the 2 stars off the N and S ends are parallel to the major axis). N3564 lies 6.7' SSW and the brightest member of the group, N3557, is 11.5' SSW.
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NGC 3569 = UGC 06238 = MCG +06-25-020 = CGCG 185-018 = PGC 34075
11 12 08.1 +35 27 08
V = 13.3; Size 1.1x1.0; Surf Br = 13.3

18" (5/31/03): faint, small, round, 0.5' diameter, very weak concentration with no visible core.
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NGC 3570 = UGC 06240 = MCG +05-27-019 = CGCG 156-018 = NPM1G +27.0307 = PGC 34071
11 12 03.3 +27 35 23
V = 13.5; Size 1.0x1.0; Surf Br = 13.4

17.5" (4/14/01): fairly faint, small, round, 30" diameter. Forms a pair with N3574 at 2.9' NE. Brightest in a faint group.
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NGC 3571 = ESO 570-011 = MCG -03-29-001 = N3544 = PGC 34028
11 11 30.3 -18 17 23
V = 12.1; Size 3.0x1.0; Surf Br = 13.2; PA = 94d

17.5" (1/31/87): fairly faint, moderately large. Contains a small bright core surrounded by a faint halo elongated 2:1 ~E-W. Located 19' NW of mag 6.1 Psi Crateris.
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NGC 3572 = ESO 129-SC1 = Cr 239
11 10 19 -60 14.9
V = 6.6; Size 20

18" (7/7/02 - Magellan Observatory, Australia): at 228x, this is an 8' irregular group of 80-100 stars including a mag 7.9 star on the west side and about a dozen mag 10 stars. A mag 6.7 star lies 11' SE of center outside of the apparent cluster (but part of Cr 240). A dark patch abuts the cluster and there is an impression of more bright and dark nebulosity in the field. At 128x with the UHC filter, the cluster is adjacent to a large field of faint nebulosity to the north (RCW 54) with the borders of the nebulosity seemingly obscured by dust. Located 16' NW of mag 4.6 HD 97534.
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NGC 3573 = ESO 377-022 = MCG -06-25-011 = LGG 229-010 = PGC 34005
11 11 18.3 -36 52 33
V = 12.3; Size 3.6x1.0; Surf Br = 13.5; PA = 4d

16" LX200 (4/14/07): moderately bright, moderately large, elongated 2:1 ~N-S, bright core, very small bright nucleus, faint extensions. A string of three mag 11.5-12.5 stars oriented E-W follow with the closest star 2.3' E and a mag 14.5 star is at the E edge. Located on the N side of the N3557 group (part of the Hydra-Centaurus Supercluster) in the NW corner of Centaurus near the Antlia border.
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NGC 3574 = MCG +05-27-022 = CGCG 156-020 = NPM1G +27.0308 = PGC 34080
11 12 12.2 +27 37 28
V = 14.8; Size 0.4x0.4; Surf Br = 12.8

17.5" (4/14/01): extremely faint, very small, round, 15" diameter, no details and requires averted vision. Located 2.9' NE of N3570 and second brightest in a group.
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NGC 3575 = N3162 = U05510 = MCG +04-24-019 = CGCG 123-026
10 13 31.6 +22 44 15

See observing notes for N3162. There was a 1 hour error in RA by d'Arrest!

Discovered by d'Arrest. Not found by Bigourdan, Reinmuth or Carlson. There is no nonstellar object near the NGC position (or *11 preceding) but Corwin uncovered that d'Arrest's RA was off by exactly one hour from N3162 and the description matches. D'Arrest made the same error with N3760 on this evening. See NGCBUGS.
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NGC 3576 = ESO 129-EN005 = RCW 57 = PP 79
11 11 32.7 -61 21 48
Size 20x15

18" (7/7/02 - Magellan Observatory, Australia): first of six sections in a small, but very interesting nebulous complex consisting of N3576, N3579, N3581, N3582, N3584 and N3586 - all situated in the same low power field with N3603! N3576 is a somewhat isolated patch on the SW side about 5' from the main sections. At 128x and a UHC filter it appeared as a faint, circular hazy patch of low surface brightness with a mag 12.5 star at the west side and ~1.5' in diameter. N3579 is a small, fan or wedge-shaped section located just to the west of larger N3584. It appears 2' in size with a 12th magnitude star at the south tip and spreading to the north and west from this star. N3581 is the brightest section of this complex and has sharply defined borders running SW-NE and NW-SE, meeting at a right angle about 1' WNW of mag 9.2 SAO 251313. The overall size is ~2'x1.5' with an irregular surface brightness. It is just disconnected from N3582, which is close NE. N3582 is another fan-shaped section which wraps around a mag 10.6 star. It has a well-defined edge running SW to NE with the northern border running E-W. The brighter star is embedded roughly in the center and several mag 13 stars are near the border. The diameter is ~2' (similar in size to N3581 just SW). N3584 is the furthest NE and the largest section of nebulosity. It appears as a looping arc about 3.5'x1', bowed out towards the east and extending mostly N-S and narrowing at the north end. A few mag 12 stars are off the edges. N3579 appears as nearly a continuation of this loop towards the west. Finally, N3586, the last in the complex, is situated ~4' SE of the center of the group of nebulae. It appears as a faint, elongated steak of 2' length oriented N-S with an 11th magnitude star about 40" NE of the north tip. The entire group was roughly sketched and easily matched up with the DSS later. N3603 lies ~25' E.
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NGC 3577 = UGC 06257 = MCG +08-21-006 = CGCG 242-010 = NPM1G +48.0180 = PGC 34195
11 13 44.9 +48 16 22
V = 13.4; Size 1.4x1.4; Surf Br = 14.0

17.5" (4/6/91): very faint, small, slightly elongated WNW-ESE. A mag 11.5 star is 30" SE of the outer halo and 1.2' from center. Forms a pair with N3583 5.2' NE.
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NGC 3579 = ESO 129-EN008 = RCW 57
11 11 58 -61 14 41

18" (7/7/02 - Magellan Observatory, Australia): N3579 is a small, fan or wedge-shaped section located just to the west of larger N3584 within the RCW 57 complex. It appears 2' in size with a 12th magnitude star at the south tip and spreading to the north and west from this star. This is the second of 6 separate pieces catalogued by John Herschel.
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NGC 3580 = MCG +01-29-018 = CGCG 039-075 = PGC 34159
11 13 15.9 +03 39 26
V = 14.0; Size 0.9x0.3; Surf Br = 12.4; PA = 178d

17.5" (5/4/02): faint, very small, 20" diameter (core), quasi-stellar nucleus. At moments there are faint extensions N-S. A mag 13 star lies 1.3' ESE of center.
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NGC 3581 = ESO 129-EN009 = Gum 38a = RCW 57
11 12 00.0 -61 18 18

18" (7/7/02 - Magellan Observatory, Australia): N3581 is the brightest section of this complex and has sharply defined borders running SW-NE and NW-SE, meeting at a right angle about 1' WNW of mag 9.2 SAO 251313. The overall size is ~2'x1.5' with an irregular surface brightness. It is just disconnected from N3582, which is close NE.
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NGC 3582 = ESO 129-EN010 = RCW 57
11 12 08.1 -61 16 30

18" (7/7/02 - Magellan Observatory, Australia): N3582 is another fan-shaped section which wraps around a mag 10.6 star. It has a well-defined edge running SW to NE with the northern border running E-W. The brighter star is embedded roughly in the center and several mag 13 stars are near the border. The diameter is ~2' (similar in size to N3581 just SW).
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NGC 3583 = UGC 06263 = MCG +08-21-008 = CGCG 242-012 = PGC 34232
11 14 10.8 +48 19 06
V = 11.1; Size 2.8x1.8; Surf Br = 12.7; PA = 125d

17.5" (4/6/91): fairly bright, fairly small, elongated 3:2 WNW-ESE, 1.5'x1.0', bright core, stellar nucleus at moments. A mag 14 star is just off the S side 1.5' from the center. Forms a pair with N3577 5.2' SW.
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NGC 3584 = ESO 129-EN012 = RCW 57
11 12 19.2 -61 13 12

18" (7/7/02 - Magellan Observatory, Australia): N3584 is the furthest NE and the largest section of nebulosity. It appears as a looping arc about 3.5'x1', bowed out towards the east and extending mostly N-S and narrowing at the north end. A few mag 12 stars are off the edges. N3579 appears as nearly a continuation of this loop towards the west.
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NGC 3585 = ESO 502-025 = MCG -04-27-004 = PGC 34160
11 13 17.1 -26 45 18
V = 09.9; Size 4.7x2.6; Surf Br = 12.6; PA = 107d

17.5" (4/6/91): very bright, fairly small, elongated 2:1 WNW-ESE, very high surface brightness, very bright core, stellar nucleus. Two mag 13.5 stars are 2.5' NE and 3.3 ' NNW. Forms the western vertex of a near equilateral triangle with two mag 8.5 stars (SAO 179663 and 179667) 8.4' E and 8.4' SE.
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NGC 3586 = ESO 129-EN013 = RCW 57
11 12 29.2 -61 20 54

18" (7/7/02 - Magellan Observatory, Australia): N3586 is the last in the complex is situated ~4' SE of the center of the complex. It appears as a faint, elongated steak of 2' length oriented N-S with an 11th magnitude star about 40" NE of the north tip.
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NGC 3587 = PK 148+57.1 = M97 = Owl Nebula = PN G148.4+57.0
11 14 47.7 +55 01 08
V = 9.8; Size 202"x196"

17.5" (3/12/88): both holes definitely visible at 280x using a UHC filter.

17.5" (2/28/87): fairly bright, very large, round. Two low contrast darker "holes" are visible with averted vision which form the "eyes" of the "Owl Nebula". The SE hole is darker but the NW hole appears larger. Central star not visible.

13" (4/29/84): moderately bright, large, round. A single hole west of center is highly suspected.

13.1" (2/25/84): darker "holes" visible near threshold, no central star at 166x-220x.
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NGC 3588 = UGC 06264 = MCG +04-27-009 = CGCG 126-011 = PGC 34219
11 14 02.5 +20 23 15
V = 14.3; Size 0.6x0.6; Surf Br = 13.0

18" (5/31/03): very faint, very small, round, 0.4' diameter. Weak, even concentration to center. Located just 8' S of mag 2.6 Delta Leonis! (Zosma). Not difficult at 320x with Delta just outside of field.
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NGC 3589 = UGC 06275 = MCG +10-16-096 = CGCG 291-046 = PGC 34308
11 15 13.4 +60 42 02
V = 13.8; Size 1.5x0.8; Surf Br = 13.8; PA = 48d

17.5" (3/19/88): faint, moderately large, oval ~SW-NE, diffuse. Located just W of the line connecting mag 7.5 SAO 15447 4' NNE and mag 8.6 SAO 15449 5' SE.
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NGC 3590 = Cr 242 = E129-SC014
11 12 59 -60 47.3
V = 8.2; Size 4

18" (7/7/02 - Magellan Observatory, Australia): at 228x, this is a small, fairly bright 2' knot of ~20 stars mag 10 and fainter. At 76x this diminutive cluster is set in a remarkable field, forming a triangle with N3603 and the N3579-86 complex to the south.
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NGC 3591 = MCG -02-29-012 = NPM1G -13.0319 = PGC 34220
11 14 03.3 -14 05 14
V = 13.3; Size 1.3x0.9; Surf Br = 13.4; PA = 150d

18" (3/19/04): fairly faint, fairly small, slightly elongated NNW-SSE, 0.9'x0.7'. Contains a very small brighter nucleus, ~10" diameter.
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NGC 3592 = UGC 06267 = MCG +03-29-011 = CGCG 096-011 = PGC 34248
11 14 27.5 +17 15 34
V = 13.7; Size 1.8x0.6; Surf Br = 13.6; PA = 120d

17.5" (4/9/99): surprisingly faint for listed magnitude, required averted and appeared as a 15" "knot" just 45" following a mag 14.5 star. Elongation not seen so I only viewed the brighter inner core of this edge-on system. Located 11' W of N3598.
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NGC 3593 = UGC 06272 = MCG +02-29-014 = CGCG 067-040 = PGC 34257
11 14 37.0 +12 49 03
V = 10.9; Size 5.2x1.9; Surf Br = 13.3; PA = 92d

17.5" (4/1/95): bright, fairly large, very elongated 3:1 E-W, 3.2'x1.2'. Strong concentration from a faint outer halo to a prominent elongated core and a very small rounder nucleus.
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NGC 3594 = UGC 06286 = MCG +09-19-022 = CGCG 267-058 = CGCG 268-011 = NPM1G +55.0115 = PGC 34374
11 16 14.0 +55 42 15
V = 13.7; Size 1.3x1.2; Surf Br = 14.1; PA = 10d

17.5" (3/12/88): faint, very small, round, bright core. A mag 11 star is 2.7' ENE.

Discovered by William Herschel (III 770). Not observed by John Herschel. William's position is 0.6 tmin W and 2.5' N of U06286 = M+09-19-022. Corwin notes that his postion is also 12' from CGCG 268-6, which has a higher surface brightness and is a possible identification. See NGCBUGS.
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NGC 3595 = UGC 06280 = MCG +08-21-009 = CGCG 242-014 = PGC 34325
11 15 25.5 +47 26 49
V = 12.1; Size 1.6x0.7; Surf Br = 12.1; PA = 176d

17.5" (4/22/95): moderately bright, fairly small, elongated 2:1 N-S. Sharp concentration with a very small bright core and much fainter extensions. Located 2.0' S of mag 7.4 SAO 43659! UGC 6255 lies 19' NW.
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NGC 3596 = UGC 06277 = MCG +03-29-013 = CGCG 096-013 = PGC 34298
11 15 06.2 +14 47 13
V = 11.3; Size 4.0x3.8; Surf Br = 14.1

13.1" (4/10/86): moderately bright, fairly large, diffuse, slightly elongated NW-SE, sharp stellar nucleus is possibly offset to the W of the geometric center.
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NGC 3597 = ESO 503-003 = MCG -04-27-005 = PGC 34266
11 14 42.0 -23 43 39
V = 12.6; Size 1.9x1.5; Surf Br = 13.6; PA = 65d

18" (3/19/04): moderately bright, fairly small, round, 0.8' diameter. Moderate even concentration to a very small bright core and stellar nucleus. A pair of mag 13 stars lie less than 2' NE of center. Located 5' SSW of mag 9.1 HD 97783.
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NGC 3598 = UGC 06278 = MCG +03-29-014 = CGCG 096-014 = PGC 34306
11 15 11.6 +17 15 45
V = 12.3; Size 1.9x1.3; Surf Br = 13.1; PA = 35d

17.5" (4/9/99): fairly faint, fairly small, slightly elongated SW-NE, well-concentrated with a bright core steadily increasing to a faint stellar nucleus. The outer halo is ill-defined and much weaker. A mag 14 star is just off the N edge 0.6' from center and a pair of mag 13.5 stars is 4' ENE. N3592 lies 11' W.
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NGC 3599 = UGC 06281 = MCG +03-29-015 = CGCG 096-015 = PGC 34326
11 15 27.0 +18 06 37
V = 12.0; Size 2.7x2.1; Surf Br = 13.7; PA = 99d

17.5" (4/13/02): moderately bright, moderately large, elongated ~4:3, 2.0'x1.5'. Contains a small, fairly bright round core which is concentrated to the center with a much lower surface brightness halo. Located 21' WNW of N3607 in a group.
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NGC 3600 = UGC 06283 = MCG +07-23-038 = CGCG 213-038 = Mrk 1443 = PGC 34353
11 15 52.0 +41 35 28
V = 11.7; Size 4.1x0.9; Surf Br = 12.9; PA = 3d

17.5" (4/1/95): fairly faint, very elongated 3:1 N-S, 1.8'x0.6', small bright core, faint extensions. Two mag 12 stars lie 2.4' and 3.2' NNW of center.
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NGC 3601 = UGC 06282 = MCG +01-29-024 = CGCG 039-091 = PGC 34335
11 15 33.3 +05 06 56
V = 13.8; Size 0.5x0.4; Surf Br = 12.1

17.5" (5/4/02): faint, small, irregularly round, 25"x20" diameter, even surface brightness. A mag 13 star lies 2.9' SSE.
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NGC 3603 = ESO 129-SC16 = Cr 244 = Gum 38b = RCW 57
11 15 07 -61 15.7
V = 9.1; Size 12

24" (4/5/08 - Magellan Observatory, Australia): this distant (20,000 light years) superluminous HII region and cluster was mesmerizing at 200x using a UHC filter. The nebulosity is generally elongated E-W, ~5'x3', but with bays and extensions and dark lanes. The surface brightness is highest to the south of the embedded cluster with a dark lane slashing through the nebulosity just west of the bright core. At 350x, 15-20 stars were resolved in the glow, though the tiny, brilliant "core" cluster was only mottled and barely resolved into a few stars.

13.1" (2/20/04 - Costa Rica): at 105x a bright irregular nebula surrounds a mag 9 "star". At 200x, a half-dozen very faint stars are packed very close to the central star. This very compact knot is actually a distant, very dense, young cluster of extremely luminous stars! Adding a UHC filter, the nebulosity is irregular at 105x, extending mostly south of the star and fading out into two or three sections that are possibly divided by a dark lane. The brightest section is to the southwest of the central star.

18" (7/7/02 - Magellan Observatory, Australia): at 228x this distant but superluminous HII region is a fascinating clump of stars of and nebulosity surrounding a bright 9th magnitude knot. The bright central region was extremely dense and contained 10-12 stars crammed into 2', yet it seemed only partially resolved at the very center into a couple of stars. At 128x and UHC filter, the surrounding "haze" is clearly gaseous in nature with the brightest portion offset to the SW side from the core with a roughly broad fan with a total size of approximately 5'x3'. A dark lane appears to cut through the nebulosity towards the core and there is a strong impression that the field is riddled with dust lanes and patches. This is a well-studied highly reddened, luminous cluster (~20,000 light years) and HII region with similarities to the Tarantula nebula in the LMC!
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NGC 3604 = NGC 3611 = U06305 = MCG +01-29-026 = CGCG 039-103 = PGC 34478
11 17 30.1 +04 33 19

See observing notes for N3611.

Discovered by WH (II 626). There is no nebula at Herschel's place and this object was not recovered by Bigourdan. Dreyer states "should probably be rejected, together with III 88 (N3401) and III 598 (N3509), the only other neb this night as there was fog "which indeed was so strong to make everything swim about me." Herschel's position is 1.0 tmin W of N3611 and Carlson and Corwin equates these numbers. See NGCBUGS..
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NGC 3605 = UGC 06295 = MCG +03-29-019 = CGCG 096-019 = PGC 34415
11 16 46.6 +18 01 01
V = 12.3; Size 1.5x1.0; Surf Br = 12.8; PA = 17d

13.1" (2/16/85): fairly faint, small, round, small bright nucleus. In a group with brigtest member N3607 3.0' NE.
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NGC 3606 = ESO 377-032 = MCG -05-27-004 = PGC 34378
11 16 15.6 -33 49 40
V = 12.4; Size 1.5x1.3; Surf Br = 13.1

18" (3/17/07): moderately bright, failrly small, round, 0.6' diameter, small bright core, relatively bright stellar nucleus. Two mag 10 and 11 stars lie 4.5' and 5.5' NNE. ESO 377-031 lies 9' SSW.
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NGC 3607 = UGC 06297 = MCG +03-29-020 = CGCG 096-021 = PGC 34426
11 16 54.7 +18 03 06
V = 9.9; Size 4.9x2.5; Surf Br = 12.5; PA = 120d

13.1" (2/16/85): bright, slightly elongated, bright core, stellar nucleus. Brightest in a group with N3608 5.7' N, N3605 3.0' SW and N3599 21' WNW.
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NGC 3608 = UGC 06299 = MCG +03-29-022 = CGCG 096-022 = PGC 34433
11 16 59.0 +18 08 55
V = 10.8; Size 3.2x2.6; Surf Br = 13.0; PA = 75d

13.1" (2/16/85): moderately bright, small, stellar nucleus. Appears slightly fainter than N3607 5.7' S. In a trio with N3605 and N3607.
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NGC 3609 = UGC 06310 = MCG +05-27-043 = CGCG 156-050 = PGC 34511
11 17 50.5 +26 37 32
V = 13.1; Size 1.2x1.0; Surf Br = 13.1; PA = 50d

17.5" (4/22/95): faint, moderately large, round, 1.2' diameter. Weak concentration to a slightly brighter core. A mag 14 star is just off the S edge 50" from center and a second mag 14 star is 1.8' NW. A brighter mag 11 star lies 3.3' NE. Forms a pair with N3612 5.4' E.
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NGC 3610 = UGC 06319 = MCG +10-16-107 = CGCG 291-048 = PGC 34566
11 18 25.3 +58 47 10
V = 10.8; Size 2.7x2.3; Surf Br = 12.8

17.5" (3/19/88): bright, small, slightly elongated NW-SE. Sharp concentration with a very small bright core and a faint halo! About 15' NNW is a small group of 7 stars including mag 9.0 SAO 27978.
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NGC 3611 = UGC 06305 = MCG +01-29-026 = CGCG 039-103 = N3604 = Todd 1 = PGC 34478
11 17 30.1 +04 33 19
V = 12.1; Size 2.1x1.7; Surf Br = 13.4

17.5" (3/22/96): moderately bright, elongated 2:1 SSW-NNE, 1.2'x0.8'. Fairly sharp concentration with a rounder 30" core and a bright nearly stellar nucleus offset to the N side of the core. A mag 11 star is 3.2' NNW.
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NGC 3612 = UGC 06321 = MCG +05-27-051 = CGCG 156-056 = PGC 34546
11 18 14.7 +26 37 13
V = 14.2; Size 1.0x0.8; Surf Br = 13.8; PA = 160d

17.5" (4/22/95): extremely faint, small, round, 20" diameter, low surface brightness. A mag 11 star lies 3.9' NW. Located 5.4' E of brighter N3609.
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NGC 3613 = UGC 06323 = MCG +10-16-109 = CGCG 291-049 = PGC 34583
11 18 36.0 +58 00 00
V = 10.9; Size 3.9x1.9; Surf Br = 13.0; PA = 102d

17.5" (3/19/88): bright, moderately large, very elongated 3:1 WNW-ESE, very bright core, stellar nucleus. N3619 lies 15' SE.
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NGC 3614 = UGC 06318 = MCG +08-21-015 = CGCG 242-019 = PGC 34561
11 18 21.3 +45 44 53
V = 11.6; Size 4.6x2.6; Surf Br = 14.1; PA = 80d

17.5" (4/6/91): faint, moderately large, weak concentration, slightly elongated 4:3 E-W with dimensions 2.5'x2.0', low surface brightness, edges fade gradually into background. Located on a line with a mag 13 star 3.5' E and a mag 12 star 5.1' W.
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NGC 3615 = UGC 06313 = MCG +04-27-012 = CGCG 126-021 = PGC 34535
11 18 06.7 +23 23 50
V = 12.8; Size 1.4x0.9; Surf Br = 13.1; PA = 40d

17.5" (4/9/99): fairly faint, fairly small, elongated 2:1 SW-NE, 1.2'x0.6'. The prominent 20" core steadily increases to a stellar nucleus. First and brightest of a trio with N3618 7' NE and extremely faint CGCG 126-022 3.2' NE.
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NGC 3617 = ESO 503-012 = MCG -04-27-008 = UGCA 231 = PGC 34513
11 17 50.9 -26 08 04
V = 12.8; Size 1.8x1.3; Surf Br = 13.7; PA = 147d

18" (3/19/04): fairly faint, small, round , 30" diameter. Increases to a very small brighter nucleus. I probably only viewed the brighter core and missed the dim halo.
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NGC 3618 = UGC 06327 = MCG +04-27-014 = CGCG 126-025 = Mrk 1288 = PGC 34575
11 18 32.6 +23 28 08
V = 13.6; Size 0.9x0.8; Surf Br = 13.1; PA = 175d

17.5" (4/9/99): faint, fairly small, round, 1.0' diameter, weak concentration. Third of three on a line with CGCG 126-022 and N3615 7' SW. At low power collinear with two mag 10 stars equally spaced 8' and 17' NE.
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NGC 3619 = UGC 06330 = MCG +10-16-115 = CGCG 291-054 = PGC 34641
11 19 21.6 +57 45 29
V = 11.5; Size 2.7x2.3; Surf Br = 13.4

17.5" (3/19/88): fairly bright, moderately large, slightly elongated SW-NE, small bright core, stellar nucleus. Forms a pair with N3625 9.5' E and N3613 lies 16' NNW.

8" (3/28/81): faint, small, round.
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NGC 3620 = ESO 038-010 = PGC 34366
11 16 04 -76 12.9
V = 13.9; Size 2.8x1.1; Surf Br = 15.0; PA = 78d

24" (4/5/08 - Magellan Observatory, Australia): fairly faint, very elongated 3:1 E-W, 1.2'x0.4', weak concentration. A mag 14.5 star is pinned against the south side, a little west of the center. I reobserved this galaxy not realizing it was logged last night. Located 32' NE of the bright reflection nebula IC 2631.

24" (4/4/08 - Magellan Observatory, Australia): fairly faint, moderately large, very elongated 3:1 E-W, 1.5'x0.5', small brighter core. A mag 14 star is barely off the south side (west of center). A reflection nebula, IC 2631, lies 32' SW.

Discovered by JH (h3338). His position and description "pmE" matches E038-010. Listed as Type 0 in the RNGC. This galaxy is not listed in ESO-LV, DSFG or U2000 but is in the ESO catalogue.

From the SGC: Small bright nucleus, bar(?) with dust, extremely faint arms form (R'): 2.3 x 1.2. Star superposed 0.4 south-preceding. Partially obscured by galactic diffuse nebula.

From David Frew: To the north and west of IC 2631 the obscuration thins out, revealing the distant star-fields beyond - look for the remote spiral galaxy NGC 3620 some 20' NW of IC 2631. The galaxy appears as a faint spindle about 1« long, elongated in pa 90¡, with a slightly brighter core; 20 cm should show it and the star on its south edge in good conditions.
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NGC 3621 = ESO 377-037 = MCG -05-27-008 = UGCA 232 = PGC 34554
11 18 16.0 -32 48 42
V = 9.7; Size 12.3x7.1; Surf Br = 14.4; PA = 159d

17.5" (4/6/91): bright, large, elongated 5:2 NNW-SSE, 6' diameter, weak central concentration and along the major axis but no sharp nucleus. Several stars are nearby; three mag 11-13 stars are off the N tip and two mag 10 stars are 2.7' SW and 3.7' SSE of center.
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NGC 3622 = UGC 06339 = CGCG 314-020 = PGC 34692
11 20 12.5 +67 14 29
V = 13.2; Size 1.2x0.5; Surf Br = 12.4; PA = 7d

17.5" (4/22/95): moderately bright, elongated 2:1 N-S, 1.2'x0.6', elongated bright core. A mag 13.5 star is 1.5' SE of center. Located 9.3' NNW of mag 6.2 SAO 15478.
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NGC 3623 = M65 = U06328 = MCG +02-29-018 = CGCG 067-054 = PGC 34612 = Leo Triplet
11 18 55.3 +13 05 35
V = 9.3; Size 9.8x2.9; Surf Br = 12.8; PA = 174d

17.5" (1/31/87): very bright, very large, very elongated N-S, 7.5'x2.0', bright core, stellar nucleus. A mag 12 star is west of the south end 2.1' from the center. Forms a remarkable trio with M66 20' ESE and N3628 36' NE. Requires low power (31 Nagler) to easily fit all three in the same field.

13.1" (4/10/86): very bright, elongated N-S, bright core is elongated, possible stellar nucleus.
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NGC 3624 = MCG +01-29-029 = CGCG 039-114 = PGC 34599
11 18 50.9 +07 31 16
V = 13.9; Size 0.9x0.6; Surf Br = 12.9; PA = 175d

17.5" (5/4/02): very faint, diffuse glow with a brighter center. Halo fades into background, ~40" diameter. A mag 13 star lies 2.5' N. Forms a close pair with CGCG 039-113 2.1' SW.
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NGC 3625 = UGC 06348 = MCG +10-16-120 = CGCG 291-057 = PGC 34718
11 20 31.2 +57 46 53
V = 13.1; Size 2.0x0.6; Surf Br = 13.2; PA = 148d

17.5" (3/19/88): faint, fairly small, very elongated NNW-SSE, weak concentration. Third of three with N3613 20' NW and N3619 9.4' W.
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NGC 3626 = UGC 06343 = MCG +03-29-032 = CGCG 096-029 = NGC 3632 = LGG 237-002 = PGC 34684
11 20 03.9 +18 21 24
V = 11.0; Size 2.7x1.9; Surf Br = 12.6; PA = 157d

16" LX200 (4/14/07): bright, fairly large, elongated 2:1 ~NNW-SSE. Sharply concentrated with a small, very bright core that increases to a bright, stellar nucleus. N3639 lies 23' ENE.

17.5" (3/22/96): bright, moderately large, elongated 3:2 NNW-SSE, 1.8'x1.2'. Strong, sharp concentration with a very small elongated core and a bright stellar nucleus. Located roughly 50' ENE of the N3607 group.
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NGC 3627 = M66 = U06346 = MCG +02-29-019 = CGCG 067-057 = Arp 16 = VV 308 = PGC 34695 = Leo Triplet
11 20 15.0 +12 59 22
V = 8.9; Size 9.1x4.2; Surf Br = 12.7; PA = 173d

17.5" (1/31/87): very bright, large, elongated N-S, 5'x3', bright elongated core contains a stellar nucleus. Two spiral arms are visible although the western arm is more prominent.

13.1" (4/24/82): bright elongated core, stellar nucleus. A diffuse spiral arm extends south and a second short arm extends to the east. A dark patch is visible just east of the nucleus.
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NGC 3628 = UGC 06350 = MCG +02-29-020 = CGCG 067-058 = Arp 317 = VV 308 = PGC 34697 = Leo Triplet
11 20 16.2 +13 35 22
V = 09.5; Size 14.8x3.0; Surf Br = 13.4; PA = 104d

17.5" (1/31/87): bright, unusually large edge-on WNW-ESE, 11'x2.5'. A broad irregular dust lane is prominent bisecting the galaxy along the entire length. Appears brighter to the north of the dark lane and fainter on the south side.

13.1" (4/24/82): the dust lane is clearly visible along the entire length and divides the galaxy into two asymmetric halves with the south slice much fainter.
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NGC 3629 = UGC 06352 = MCG +05-27-058 = CGCG 156-064 = Ho 247a = PGC 34719
11 20 31.7 +26 57 49
V = 12.1; Size 2.3x1.6; Surf Br = 13.4; PA = 30d

18" (3/29/03): faint, moderately large, slightly elongated, 1.2'x0.9', diffuse, low surface brightness, weak broad concentration. A mag 14 star is 1.1' SE of center.
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NGC 3630 = UGC 06349 = MCG +01-29-031 = CGCG 039-124 = N3645: = PGC 34698
11 20 17.0 +02 57 52
V = 11.9; Size 4.6x3.0; Surf Br = 14.6; PA = 37d

17.5" (4/4/92): fairly bright, fairly small, very elongated 3:1 SW-NE, small but very bright core, stellar nucleus, thin extensions. Located 10' NW of mag 8.3 SAO 118800 in the N3640 group.

8" (4/24/82): faint, small, elongated SW-NE, very small bright core. Located ~20' SW of N3640.
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NGC 3631 = UGC 06360 = MCG +09-19-047 = CGCG 268-021 = Arp 27 = VV 363 = PGC 34767
11 21 02.9 +53 10 10
V = 10.4; Size 5.0x4.8; Surf Br = 13.7

17.5" (4/1/95): bright, large, round, 3.5' diameter. Sharp concentration with a prominent core which brightens to a nearly stellar nucleus. The outer halo fades into the background and shows a hint of spiral arms. Two mag 12-13 stars are 3.4' NE and 3.3' WNW of center.
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NGC 3632 = NGC 3626 = U06343 = MCG +03-29-032 = CGCG 096-029 = PGC 34684
11 20 03.9 +18 21 24

See observing notes for N3626.

Discovered by WH (II 30). In Scientific Papers of WH Dreyer states "not seen by d'A (5 times), is no doubt =II 52 = N3626 only 24s p and 12' N. The latter was observed 14 Mar 1784, a neb like II 51 but a little longish." This conclusion is repeated by Reinmuth and Father Hagen.
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NGC 3633 = UGC 06351 = MCG +01-29-032 = CGCG 039-126 = PGC 34711
11 20 26.2 +03 35 08
V = 13.6; Size 1.2x0.4; Surf Br = 12.6; PA = 72d

17.5" (4/4/92): faint, fairly small, very elongated 3:1 WSW-ENE, weak concentration. A mag 14 star is off the W edge. Located 3.5' WSW of mag 8.9 SAO 118799. N3640 lies 21' SSE. Member of N3640 group.
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NGC 3635 = MCG -01-29-009 = VV 724 = NPM1G -08.0342 = PGC 34717
11 20 31.4 -09 00 49
V = 13.4; Size 1.7x0.6; Surf Br = 13.3; PA = 18d

17.5" (4/14/01): faint, small, elongated 3:2 NNW-SSE, 0.7'x0.4', weak concentration. Forms an interacting pair with N3634 on the west edge (not seen). A mag 14.5 star lies 1' W.
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NGC 3636 = MCG -02-29-019 = PGC 34709
11 20 25.1 -10 16 55
V = 12.4; Size 1.3x1.3; Surf Br = 13.0

17.5" (3/29/85): moderately bright, very small, bright core, round. Located just 1.8' NW of mag 6.6 SAO 156618! Forms a pair with similar galaxy N3637 3.8' ENE.
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NGC 3637 = MCG -02-29-020 = PGC 34731
11 20 39.5 -10 15 27
V = 12.7; Size 1.6x1.5; Surf Br = 13.6

17.5" (3/29/85): moderately bright, very small, bright core, round. Located 3.0' NE of mag 6.6 SAO 156618. Forms a pair with N3636 3.8' WSW.
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NGC 3638 = MCG -01-29-007 = PGC 34688
11 20 10.0 -08 06 21
V = 13.4; Size 2.2x0.7; Surf Br = 13.7; PA = 141d

17.5" (5/4/02): faint, fairly small, elongated 2:1 NW-SE, 1.2'x0.6', brighter along the major axis. With averted vision, there are hints of longer extensions. Forms the western vertex of a right triangle with two mag 12 stars 3.4' E and 4.3' NE.
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NGC 3639 = UGC 06374 = MCG +03-29-036 = CGCG 096-032 = PGC 34819
11 21 35.7 +18 27 30
V = 13.6; Size 0.6x0.5; Surf Br = 12.3

16" LX200 (4/14/07): faint, small, elongated 4:3 ~N-S, occasional very faint stellar nucleus with direct vision. Located 2' N of a mag 12 star.

Discovered by Rosse on 21 Jan 1855 and described as ~15' E of NGC 3626 and a little N. Not found with certainty in 1877 and suspected to be a faint star. RNGC and RC3 identify NGC 3639 as UGC 6374, which is located 22' E and 6' N of NGC 3626. UGC, CGCG and MCG do not assign a NGC designation. Based on the difference in RA and Dec, this identification is not certain.
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NGC 3640 = UGC 06368 = MCG +01-29-033 = CGCG 039-130 = PGC 34778
11 21 06.8 +03 14 05
V = 10.4; Size 4.0x3.2; Surf Br = 13.2; PA = 100d

17.5" (2/8/91): bright, moderately large, small very bright core, oval halo 3:2 E-W, 15" substellar mottled nucleus. A mag 14 star is 2.3' N. Brightest in a group and forms a close pair with N3641 2.5' SSE.

8" (4/24/82): bright, moderately large, bright core, slightly elongated.
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NGC 3641 = UGC 06370 = MCG +01-29-034 = PGC 34780
11 21 08.8 +03 11 40
V = 13.2; Size 1.1x1.1; Surf Br = 13.3

17.5" (2/8/91): faint, very small, round, faint stellar nucleus. Forms a close pair with bright N3640 2.6' NNW.
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NGC 3642 = UGC 06385 = MCG +10-16-128 = CGCG 291-062 = PGC 34889
11 22 17.9 +59 04 28
V = 11.2; Size 5.4x4.5; Surf Br = 14.5; PA = 105d

17.5" (3/19/88): bright, fairly large, round, even concentration down to a very bright core, faint stellar nucleus. Appears mottled (knot?) on the west side of the core.
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NGC 3643 = MCG +01-29-036 = CGCG 039-136 = PGC 34802
11 21 25.0 +03 00 50
V = 14.1; Size 0.8x0.3; Surf Br = 12.4

17.5" (4/4/92): very faint, fairly small, elongated 2:1 NW-SE. A mag 13 star is at the SE edge 1.0' from center. N3644 lies 12' S.

Marth's position matches M+01-29-036 = CGCG 039-136. RNGC appears to have misidentified N3643; the position falls close to N3645 which is actually a duplicate observation of N3630 (see article by Alister Ling and RNGC Corrections #2). Corwin sorts things out in NGCBUGS.
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NGC 3644 = UGC 06373 = MCG +01-29-037 = CGCG 039-139 = IC 684 = PGC 34814
11 21 32.9 +02 48 37
V = 13.7; Size 1.5x0.7; Surf Br = 13.6; PA = 63d

17.5" (4/4/92): faint, small, elongated 3:2 WSW-ENE. A mag 13 star is at the SW edge 0.6' from center. Located 12' ESE of mag 8.3 SAO 118800 in the N3640 group with N3643 12' N. A very faint quartet of galaxies is midway between N3644 and N3643.

Marth's position matches U06373 = M+01-29-037. Bigourdan thought his observation of this galaxy was new (he misidentified N3644 with a star) and it received the duplicate identification IC 684. Kobold identifies this galaxy as N3645(?). Possible member of the N3640 group.
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NGC 3645 = NGC 3630: = U06349 = MCG +01-29-031 = CGCG 039-124 = PGC 34817
11 20 17.0 +02 57 52

See observing notes for N3630.

Discovered by WH (II 32) and placed 6.5 tmin W and 7' N of 84 (Tau) Leo. This position is 1 min 10 sec following h861 = N3630. The identification of II 32 is discussed in detail by Malcolm Thomson in WSQJ #73, Alister Ling in WSQJ #87 and Harold Corwin in NGCBUGS. It is concluded that II 32 is a duplicate observation of N3630, although in the NGC notes, Dreyer states "N3645 ­ N3630". RNGC and CGCG misidentify N3645 as CGCG 39-143 (15.5z) although this galaxy is certainly too faint to be II 32.
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NGC 3646 = UGC 06376 = MCG +03-29-037 = CGCG 096-034 = PGC 34836
11 21 43.1 +20 10 10
V = 11.1; Size 3.9x2.2; Surf Br = 13.3; PA = 50d

17.5" (4/14/01): moderately bright, fairly large, elongated 3'x2' NW-SE. Gradually increases to a brighter 30" oval core. A quasi-stellar nucleus is occasionally visible with direct vision. Forms a pair with N3649 7.8' ENE.

13.1": moderately bright and large, elongated, broad concentration with no nucleus. An extremely faint star or knot is involved.
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NGC 3648 = UGC 06389 = MCG +07-23-043 = CGCG 213-043 = CGCG 214-002 = LGG 236-001 = PGC 34908
11 22 31.5 +39 52 37
V = 12.6; Size 1.3x0.8; Surf Br = 12.5; PA = 75d

18" (5/30/03): fairly faint, fairly small, elongated 3:2 WSW-ENE, 0.9'x0.6'. Contains a small, round, bright core with a quasi-stellar nucleus. Located 18' S of mag 6.6 SAO 43717 and 7' ESE of mag 9.7 SAO 43713.
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NGC 3649 = UGC 06386 = MCG +03-29-038 = CGCG 096-036 = IC 682 = PGC 34883
11 22 14.8 +20 12 30
V = 13.7; Size 1.2x0.6; Surf Br = 13.2; PA = 140d

17.5" (4/14/01): faint, small, elongated 3:2 SW-NE, 0.6'x0.4' (viewed oval core only). A mag 14.5 star is just off the south edge [23" from center]. Forms a pair with N3646 7.8' WSW.
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NGC 3650 = UGC 06391 = MCG +04-27-031 = CGCG 126-043 = PGC 34913
11 22 35.4 +20 42 15
V = 13.9; Size 1.7x0.3; Surf Br = 13.0; PA = 54d

17.5" (4/14/01): fairly faint, fairly small, edge-on 5:1 SW-NE, 1.0'x0.2', irregular surface brightness, small brighter core. Situated 2.7' SE of a mag 11 star.
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NGC 3651 = UGC 06388 = MCG +04-27-028 = CGCG 126-042n = HCG 51a = PGC 34898
11 22 26.3 +24 17 56
V = 13.2; Size 1.1x1.1; Surf Br = 13.4

17.5" (5/11/96): this is the brightest member of the HCG 51 quintet. Fairly faint, fairly small, slightly elongated N-S, 1.0'x0.8', small brighter core. Forms a small isosceles triangle with N3653 (51C) 1.4' SE and MCG +04-27-030 (51D) 1.0' E. MCG +04-27-026 (51B) lies 2.7' W which is a close pair with brighter IC 2759 (51E) 1' N.
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NGC 3652 = UGC 06392 = MCG +06-25-055 = CGCG 185-049 = LGG 236-002 = PGC 34917
11 22 39.0 +37 45 54
V = 12.2; Size 2.0x0.7; Surf Br = 12.4; PA = 150d

18" (5/30/03): moderately bright, moderately large, elongated 2:1 NNW-SSE, 1.0'x0.5'. Contains a bulging core and much fainter extensions.
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NGC 3653 = MCG +04-27-029 = CGCG 126-044 = NPM1G +24.0240 = HCG 51c = PGC 34905
11 22 30.0 +24 16 45
V = 13.6; Size 0.9x0.6; Surf Br = 12.8; PA = 85d

17.5" (5/11/96): faint, small, slightly elongated E-W, 30" diameter, stellar nucleus. Second brightest in HCG 51 quintet with brightest member N3651 1.4' NW.
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NGC 3654 = UGC 06407 = MCG +12-11-022 = CGCG 334-029 = PGC 35025
11 24 10.9 +69 24 47
V = 12.7; Size 1.2x0.6; Surf Br = 12.3; PA = 27d

17.5" (4/22/95): fairly faint, fairly small, elongated 2:1 SW-NE, brighter along the major axis, very small bright core. Situated midway betwen a mag 12 star 3.1' NE and a mag 13 star 3.4' SW of center.
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NGC 3655 = UGC 06396 = MCG +03-29-039 = CGCG 096-037 = PGC 34935
11 22 54.7 +16 35 24
V = 11.6; Size 1.5x1.0; Surf Br = 12.0; PA = 30d

17.5" (4/15/93): fairly bright, fairly small, elongated 3:2 SSW-NNE, prominent core, stellar nucleus, fainter extensions, high surface brightness. A mag 12.5 star is 2.5' ENE.

8" (4/24/82): fairly bright, bright core, slightly elongated. Located 45' WNW of a mag 6 star.
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NGC 3656 = UGC 06403 = MCG +09-19-063 = CGCG 268-029 = Arp 155 = VV 22a = PGC 34989
11 23 38.5 +53 50 32
V = 12.5; Size 1.6x1.6; Surf Br = 13.4; PA = 7d

18" (5/30/03): moderately bright, round, fairly small, 0.8' diameter, fairly weak concentration with a brighter core. A mag 11-12 star is just off the west side, 45" from center.
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NGC 3657 = UGC 06406 = MCG +09-19-065 = CGCG 268-030 = LGG 241-010 = PGC 35002
11 23 55.6 +52 55 15
V = 12.4; Size 1.4x1.4; Surf Br = 13.1

18" (5/30/03): moderately bright, fairly small, round, 0.7' diameter, small bright core.
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NGC 3658 = UGC 06409 = MCG +07-24-002 = CGCG 214-003 = LGG 236-003 = PGC 35003
11 23 58.3 +38 33 45
V = 12.2; Size 1.6x1.5; Surf Br = 13.0

18" (5/30/03): moderately bright, moderately large, round, 1.0' diameter, small bright core, symmetrical appearance. Located 15' SW of N3665 and 9' SE of mag 9 SAO 62530.
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NGC 3659 = UGC 06405 = MCG +03-29-040 = CGCG 096-038 = PGC 34995
11 23 45.3 +17 49 04
V = 12.3; Size 2.1x1.1; Surf Br = 13.0; PA = 60d

13.1" (4/10/86): fairly faint, fairly small, weak concentration, elongated WSW-ENE.
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NGC 3660 = MCG -01-29-016 = UGCA 234 = Mrk 1291 = PGC 34980
11 23 32.2 -08 39 31
V = 11.9; Size 2.9x2.2; Surf Br = 13.7; PA = 110d

18" (3/19/04): fairly faint, fairly large, round, ~2' diameter with averted vision, broad concentration but then suddenly increases to a small nucleus. A faint star is off the W edge 1' from center. A trio of mag 10-12 stars follows by ~5'. Located 19' NE of mag 6.9 HD 98853.
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NGC 3661 = MCG -02-29-022 = IC 689 = PGC 34986
11 23 38.4 -13 49 51
V = 14.0; Size 1.7x0.8; Surf Br = 14.2; PA = 137d

17.5" (3/29/85): faint, very elongated NW-SE. A string of three mag 11 stars begins 1.6' S and continues to the SE. N3667 lies 10' E.
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NGC 3662 = UGC 06408 = MCG +00-29-025 = CGCG 011-086 = PGC 34996
11 23 45.6 -01 06 12
V = 12.9; Size 1.4x0.9; Surf Br = 13.0; PA = 25d

17.5" (5/4/02): fairly faint, fairly small, elongated 4:3 ~SSW-NNE, 1.0'x0.7'. There is a fairly bright star ~mag 13.5 which is superimposed about 10" NE from the geometric center and appears similar to a bright stellar nucleus.
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NGC 3663 = MCG -02-29-023 = PGC 35006
11 23 59.8 -12 17 47
V = 12.5; Size 2.1x1.6; Surf Br = 13.7; PA = 85d

17.5" (3/29/85): faint, fairly small, oval E-W, low even surface brightness. Two mag 13 and 15 stars are at the NE edge 39" and 57" from the center, respectively.
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NGC 3664 = UGC 06419 = MCG +01-29-041 = CGCG 039-170 = Arp 5 = VV 251 = VIII Zw 146 = LGG 233-004 = PGC 35041
11 24 24.8 +03 19 39
V = 12.8; Size 2.0x1.9; Surf Br = 14.1

17.5" (5/4/02): fairly large, low surface brightness glow with just a weak concentration, ~2' diameter. Nearly collinear with a wide pair of mag 10.5/12.5 stars 3' SE with a mag 10.5 star 7' NW also on this line. In addition, three mag 13 stars to the east are collinear! Located 20' W of a mag 6.7 star. This Arp galaxy is an an unusual one-armed spiral with a faint outer ring.

13.1" (4/10/86): very faint, slightly elongated ~N-S. Two stars lie SE and a bright star (82 Leo) is ~20' E.
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NGC 3665 = UGC 06426 = MCG +07-24-003 = CGCG 214-004 = LGG 236-004 = PGC 35064
11 24 43.7 +38 45 47
V = 10.8; Size 2.5x2.0; Surf Br = 12.4; PA = 30d

18" (5/30/03): bright, fairly large, elongated 3:2 SSW-NNE, 2.4'x1.6', strong concentration with a very bright core which increases to the center. A mag 14.5 star lies 1.6' N of center, outside the halo. N3658 lies 15' SW.

17.5" (5/2/92): very bright, fairly large, elongated 2:1 SSW-NNE, 2.5'x1.3', increases to very bright core, stellar nucleus, fainter elongated halo. A mag 15 star is off the N edge.

Discovered by WH (I 219). The NGC position is correct but there is a misprint in the declination in the RNGC which is listed as 2 deg 54' instead of 38 deg 54'.
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NGC 3666 = UGC 06420 = MCG +02-29-025 = CGCG 067-071 = PGC 35043
11 24 26.2 +11 20 31
V = 12.0; Size 4.4x1.2; Surf Br = 13.7; PA = 100d

13.1" (4/10/86): fairly faint, elongated ~E-W, bright core, sharper light cut off on the E side. A mag 14 star is 1.5' NNE of center. Located 9' SW of mag 5.8 SAO 99598.
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NGC 3667 = MCG -02-29-025 = NPM1G -13.0324 = RN3667A = PGC 35028
11 24 17.0 -13 51 26
V = 12.7; Size 1.5x1.0; Surf Br = 12.4; PA = 85d

17.5" (3/29/85): moderately bright, very small, round, small bright nucleus. Forms a close pair with N3667B = MCG -02-29-026 1.1' E. N3661 lies 10' W.
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NGC 3667B = MCG -02-29-026 = PGC 35034
11 24 21.5 -13 51 21
V = 13.5; Size 1.4x0.6; Surf Br = 13.2; PA = 40d

17.5" (3/29/85): faint, very small, round, low surface brightness. Located 1' E of N3667.
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NGC 3668 = UGC 06430 = MCG +11-14-023 = CGCG 314-026 = PGC 35123
11 25 30.4 +63 26 46
V = 12.3; Size 1.7x1.3; Surf Br = 13.1; PA = 137d

17.5" (4/22/95): moderately bright, moderately large, elongated 3:2 NW-SE, 1.5'x1.0', mottled appearance. Well concentrated with an elongated core and a bright nucleus. A mag 15 star is superimposed at the NW end 0.6' from center (companion?). Located 2.6' NE of a mag 10 star. Forms a pair with MCG +11-14-25a 9.7' E at edge of the 225x field.
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NGC 3669 = UGC 06431 = MCG +10-16-135 = CGCG 291-067 = PGC 35113
11 25 26.7 +57 43 17
V = 12.4; Size 2.2x0.5; Surf Br = 12.5; PA = 153d

17.5" (3/19/88): fairly faint, moderately large, edge-on 4:1 NNW-SSE, even surface brightness.
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NGC 3670 = UGC 06427 = MCG +04-27-033 = CGCG 126-048 = PGC 35067
11 24 49.7 +23 56 43
V = 13.5; Size 1.1x0.7; Surf Br = 13.0; PA = 35d

18" (5/31/03): fairly faint, fairly small, slightly elongated SW-NE, 0.7'x0.5'. Moderate concentration with faint extensions and a small, brighter core.
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NGC 3671 = CGCG 291-068= NPM1G +60.0100 = PGC 35149
11 25 52.5 +60 28 46
V = 14.6; Size 0.5x0.4; PA = 10d

17.5" (3/19/88): extremely faint and small, round. A mag 14.5 star is close E.

Discovered by WH (III 922). JH's position (h885) matches CGCG 291-068 although his description reads "This must be my father's neb, but it is a suspicious object and I doubt whether it be not a little knot of 3 or 5 stars." My visual description mentions a mag 14.5 star close following. This galaxy is not in MCG or RC3.
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NGC 3672 = MCG -02-29-028 = UGCA 235 = PGC 35088
11 25 02.5 -09 47 40
V = 11.4; Size 4.2x1.9; Surf Br = 13.5; PA = 8d

17.5" (3/29/85): fairly bright, fairly large, oval 2:1 N-S, weakly concentrated to the center.

8" (5/21/82): faint, diffuse. Located 20' W of a mag 7.5 star.
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NGC 3673 = ESO 503-016 = MCG -04-27-010 = UGCA 236 = PGC 35097
11 25 12.8 -26 44 12
V = 11.5; Size 3.6x2.4; Surf Br = 13.7; PA = 70d

18" (3/19/04): moderately bright, moderately large, elongated 3:2 ~E-W, 2.0'x1.4', broad concentration to halo. Appears brighter along the major axis like a bar (verified on the DSS) with a very small brighter core. Two mag 11.5 and 13 stars following closely, 2' and 1.5' from the center. Located 8' N of mag 8.7 SAO 179863.

18" (3/19/04): moderately bright, fairly large, elongated nearly 2:1 WSW-ENE. Contains a bright 45" elongated core embedded in a much faint halo, ~2.5'x1.5'. Within the halo is the strong impression of a bar and the galaxy is locally brighter immediately following the bar.
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NGC 3674 = UGC 06444 = MCG +10-16-138 = CGCG 291-069 = PGC 35191
11 26 26.6 +57 02 54
V = 12.2; Size 1.9x0.6; Surf Br = 12.4; PA = 33d

17.5" (3/19/88): moderately bright, small, very elongated SSW-NNE, small bright core, stellar nucleus. N3683 lies 13.6' SE.
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NGC 3675 = UGC 06439 = MCG +07-24-004 = CGCG 214-005 = PGC 35164
11 26 07.8 +43 35 06
V = 10.2; Size 5.9x3.1; Surf Br = 13.2; PA = 178d

17.5" (4/6/91): very bright, fairly large, elongated 5:2 N-S, 4'x1.5', very bright sharply defined elongated core, substellar nucleus. A mag 13 star is at the SSW edge 2.0' from the center. A dust lane is evident by a sharper light cut-off along the E side of the core.
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NGC 3676 = MCG -02-29-029 = NPM1G -10.0377 = PGC 35131
11 25 37.5 -11 08 23
V = 13.6; Size 0.9x0.7; Surf Br = 13.2; PA = 151d

16" LX200 (4/14/07): faint, small, round, 0.5' diameter, occasional very faint stellar nucleus. Located in an asterims of 5 mag 11.5-12.5 stars with two mag 11.5 stars just 1' NNE and 1' SE. Listed as nonexistent in the RNGC.

Discovered by Muller (II). His dec is 30' N of M-02-29-029 but the description of "2 st 10 nf, sf" matches this galaxy perfectly although no discovery sketch has been found. This galaxy is not identified as N3676 in MCG (-02-29-029) or U2000 DSFG. Not found by Bigourdan (probably because of the poor discovery position). Listed as nonexistent in RNGC.
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NGC 3677 = UGC 06441 = MCG +08-21-035 = CGCG 242-035 = NPM1G +47.0198 = PGC 35181
11 26 17.7 +46 58 26
V = 12.3; Size 1.9x1.7; Surf Br = 13.4; PA = 130d

18" (5/30/03): fairly faint, fairly small, elongated 4:3 NW-SE, 0.8'x0.6'. Weak, even concentration to a small, brighter core. Collinear with two mag 11 stars 4' and 6' NNE.
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NGC 3678 = UGC 06443 = MCG +05-27-071 = CGCG 156-075 = PGC 35177
11 26 15.7 +27 52 01
V = 13.6; Size 0.8x0.8; Surf Br = 13.0

18" (3/29/03): faint, fairly small, round, 0.7' diameter, fairly even surface brightness.
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NGC 3679 = MCG -01-29-021 = Mrk 1294 = PGC 35165
11 26 08.6 -05 35 09
Size 1.0x0.5; PA = 178d

18" (3/19/04): fairly faint, small, elongated 5:2 N-S, 0.7'x0.3', fairly even surface brightness. Three mag 14 stars are within 2'. Located 4.6' SSE of a mag 10 star. The NGC identification is very uncertain and may apply to MCG -01-29-012.

Discovered by WH (III 112) on the same night by as N3915 (sweep 205, 24 April 1784), neither of which match galaxies in the sky. Dreyer gives an approximate position in NGC due to uncertainty with his reference star. See Notes section of NGC. William mentions a "vB star near" but there is no bright star near M-01-29-021 which RNGC identifies as N3679. Furthermore, the NGC position is 16' S of M-01-29-021 (MCG does not make the NGC identification) and WH's original offset is 20' S of this galaxy, so this identification seems unlikely. In the IC I notes, the position is revised by Spitaler who found nothing at the NGC or Auwer's position. See Corwin's extensive discussion in NGCBUGS where he suggests that N3679 might be M-01-29-012 which is 2.4' S of of mag 7.9 SAO 138156.
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NGC 3680 = Cr 247 = E265-SC032
11 25 37 -43 15.0
V = 7.6; Size 12

13.1" (2/18/04 - Costa Rica): scattered group of a dozen stars at 105x in 7' but with an interesting arrangement as many of the stars form two intersecting lanes crossing at a right angle. Includes a few mag 10-10.5 stars.
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NGC 3681 = UGC 06445 = MCG +03-29-048 = CGCG 096-045 = PGC 35193
11 26 29.8 +16 51 48
V = 11.2; Size 2.5x2.0; Surf Br = 12.8; PA = 170d

13.1" (1/18/85): moderately bright, round, brighter core, stellar nucleus. On a line with two stars mag 11 and 12 3.0' NE and 4.7' NE. First of four in the N3686 group with N3684 14' NNE, N3691 24' ENE and N3686 28' NE.
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NGC 3682 = UGC 06459 = MCG +11-14-027 = CGCG 314-029 = PGC 35266
11 27 41.2 +66 35 23
V = 12.5; Size 1.7x1.1; Surf Br = 13.0; PA = 95d

18" (3/30/05): moderately bright, small, slightly elongated E-W, ~0.6'x0.45'. Sharply concentrated with a very small, very bright, 20" core and a much fainter halo. Located on the Draco-Ursa Major border.
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NGC 3683 = UGC 06458 = MCG +10-16-143 = CGCG 291-072 = PGC 35249
11 27 32.0 +56 52 37
V = 12.5; Size 1.9x0.7; Surf Br = 12.6; PA = 128d

17.5" (3/19/88): moderately bright, moderately large, very elongated NW-SE, small bright core. I In a low power field with N3674 14' NW and N3683A 21' NE.
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NGC 3683A = UGC 06484 = MCG +10-17-006 = CGCG 291-075 = PGC 35376
11 29 11.7 +57 07 57
V = 11.9; Size 2.3x1.7; Surf Br = 13.3; PA = 75d

17.5" (3/19/88): moderately bright, moderately large, oval ~SW-NE, broad concentration. A mag 13 star is at the NE edge.
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NGC 3684 = UGC 06453 = MCG +03-29-050 = CGCG 096-047 = PGC 35224
11 27 11.2 +17 01 48
V = 11.4; Size 3.1x2.1; Surf Br = 13.3; PA = 130d

13.1" (1/18/85): moderately bright, slightly elongated NW-SE, broad concentration. Second of three on a line with N3681 14' SW and N3686 14' NE. Also, N3691 lies 15' SE.
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NGC 3686 = UGC 06460 = MCG +03-29-051 = CGCG 096-049 = PGC 35268
11 27 44.1 +17 13 26
V = 11.3; Size 3.2x2.5; Surf Br = 13.5; PA = 15d

13.1" (1/18/85): brightest and largest in a group with N3681, N3684 and N3691. Elongated 4:3 ~N-S, 3.0'x2.4', brighter core. An extremely faint star or knot is involved. A mag 11 star lies 2.6' N of center. N3684 is 14' SSW and N3691 19' SSE.
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NGC 3687 = UGC 06463 = MCG +05-27-073 = CGCG 156-078 = Mrk 736 = PGC 35285
11 28 00.6 +29 30 39
V = 12.0; Size 1.9x1.9; Surf Br = 13.3

18" (3/29/03): fairly faint, fairly small, round. Seems to have an irregular surface brightness with a very small, slightly brighter condensation in the halo.
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NGC 3688 = MCG -01-29-024 = NPM1G -08.0344 = PGC 35269
11 27 44.4 -09 09 56
V = 14.3; Size 1.2x0.9; Surf Br = 14.2; PA = 10d

18" (3/17/07): faint, fairly small, elongated 2:1 SSW-NNE, 0.7'x0.35', low even surface brightness. Located 7.6' SSW of a mag 10.5 star.
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NGC 3689 = UGC 06467 = MCG +04-27-037 = CGCG 126-057 = PGC 35294
11 28 11.0 +25 39 41
V = 12.3; Size 1.7x1.1; Surf Br = 12.9; PA = 97d

17.5" (4/9/99): moderately bright, oval 5:3 ~E-W, ~1.3'x0.8', broadly concentration to a brighter core. The core brightens but no distinct nucleus.

8" (4/24/82): faint, round.
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NGC 3690 = UGC 06471/2 = MCG +10-17-003 = CGCG 291-073 = VV 118a/b = Arp 299 = Mrk 171a/b = PGC 35321
11 28 31.9 +58 33 45
V = 11.5; Size 2.0x1.5; Surf Br = 12.6; PA = 50d

17.5" (4/1/95): N3690 forms a disrupted interacting system (Arp 299) with IC 694 close NW. This unusual system appears moderately bright, fairly small, elongated E-W. The appearance is confusing with two very small "knots" in a common halo elongated E-W (20" between centers). On the west side is a fairly bright virtually stellar "knot" which is probably the nucleus of the brighter member N3690. There is a small fainter unconcentrated extension on the following end and the two components are not individually resolved. With averted vision an extremely faint spot (this may be the "real" IC 694) is intermittently visible about 1' NW.

17.5" (3/19/88): fairly bright, moderately large, elongated ~E-W, irregular, mottled appearance. A mag 14 star is superimposed on the west side and an extremely faint mag 15.5 star or knot is involved. This is a disrupted interacting system which includes IC 694.

Discovered by WH (I 247). See the short article on identifications by Murray Cragin in April 1993 Deep-Sky Observer (Webb Society). N3690 and IC 694 are part of an interacting system oriented E-W without well-defined centers. IC 694 appears to apply to an extremely faint 16th mag companion 1.1' NW of the N3690 system within the outer halo. See visual observation of IC 694.

Six supernovae have been discovered in the past 15 years! (as of 2005)
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NGC 3691 = UGC 06464 = MCG +03-29-053 = CGCG 096-050 = PGC 35292
11 28 09.4 +16 55 11
V = 11.8; Size 1.3x1.0; Surf Br = 12.0; PA = 15d

13.1" (1/18/85): fairly faint, slightly elongated, moderately large, even surface brightness. Last of four in the N3686 group. Located 19' SSE of N3686 and 15' SE of N3684.
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NGC 3692 = UGC 06474 = MCG +02-29-032 = CGCG 067-084 = PGC 35314
11 28 24.0 +09 24 27
V = 12.1; Size 3.2x0.7; Surf Br = 12.9; PA = 95d

17.5" (2/28/87): fairly faint, thin edge-on 5:1 E-W, 2.0'x0.4', very small bright core. A mag 13 star is off the NE edge 2.3' from the center. N3705 lies 26' ESE.
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NGC 3693 = MCG -02-29-032 = NPM1G -12.0359 = PGC 35299
11 28 11.5 -13 11 41
V = 12.3; Size 3.7x0.8; Surf Br = 13.3; PA = 85d

17.5" (5/2/92): faint, fairly small, very elongated 4:1 E-W, very small bright core. A mag 12 star is 3.3' WSW. Located 10' SE of mag 8.3 SAO 156691.
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NGC 3694 = UGC 06480 = MCG +06-25-076 = CGCG 185-070 = PGC 35352
11 28 54.1 +35 24 50
V = 12.9; Size 0.7x0.6; Surf Br = 11.8; PA = 120d

17.5" (4/18/98): fairly faint, small, irregularly round, 30"-40" diameter, bright core, stellar nucleus at moments. Brightest in a pretty similar trio of N3695 11' NNE and N3700 11' NE (both with uncertain NGC identifications).
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NGC 3695 = UGC 06490 = MCG +06-25-078 = CGCG 185-071 = N3698 = PGC 35389
11 29 17.3 +35 34 31
V = 14.0; Size 1.0x0.6; Surf Br = 13.3; PA = 10d

17.5" (4/18/98): faint, fairly small, elongated 3:2 ~NNW-SSE, 1.0'x0.7'. Weak even concentration to a slightly brighter core and occasional stellar nucleus with direct vision at 280x. A mag 14 star lies 1.7' SE. In a trio with N3694 11' SSW and N3700 5.7' SE.

Discovered by Ball at Birr Castle on 31 Mar 1867 in the observation of N3694. Described as "3 F Neb forming a triangle certainly seen here and one or more susp in the neighborhood. There being no great difference in brightness, it is not easy to see which is h899. The 2 nf ones, pos 310¡, dist 339" [5564 and 5566]." The relative position for the latter two exactly match N3695 = GC 5564 = U6490 and N3700 = GC 5566 = U6494.

But on 18 Mar 1876 Dreyer reobserved N3694 and stated "nnp is a pS, eeF neb [=5564] in PA 357.2¡, Dist 256.7"." This was the position Dreyer used in NGC for N3695, although it corresponds with mag 14.8 GSC star at 11 28 53.1 +35 29 00 (2000). In the same observation, Dreyer notes "about 15' n and a few minutes f is another eF, vS neb [5565] with an ef* 2' sf." Apparently he felt this object was not observed on 31 Mar 1867 so it was given a separate designation, GC 5565 = N3698, but this rough description appears to describe U6490 = N3695 which has a mag 14.4 GSC star 1.7' SE. So, it seems likely that N3698 is a duplicate observation of N3695. Reinmuth identifies U6490 as N3698 and misidentifies N3695 with the faint star 4.1' N of N3694 given by Dreyer.
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NGC 3696 = PGC 35340
11 28 43.9 -11 16 58
Size 1.2x1.0; PA = 90d

18" (5/12/07): very faint, very small, elongated 4:3 E-W, ~16"x12". There appeared to be a mag 15.5 star superimposed NE of center. Located 3.2' NW of a mag 10 star.

16" LX200 (4/14/07): extremely faint, very small, round. Only glimpsed with averted, though the observation was likely made through clouds that I noticed afterwards.

Discovered by Leavenworth (II). There are no notes or sketch left on this object but his position is 10 tsec W and 10' S of a faint galaxy (not in MCG) at 11 28 43.9 -11 16 58 (2000). NGC 3696 was not recovered by Bigourdan and the identification is uncertain.
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NGC 3697 = UGC 06479 = MCG +04-27-042 = CGCG 126-061 = HCG 53a = Ho 258a = PGC 35347
11 28 50.4 +20 47 43
V = 13.1; Size 2.3x0.7; Surf Br = 13.5; PA = 93d

17.5" (4/1/95): brightest of three in the HCG 53. Fairly faint, moderately large, very elongated 3:1 E-W, weak even concentration. A mag 11.5 star is 3.6' W and a mag 13 star 1.8' SE. The mag 13 star is on a line midway to a pair of close companions MCG +04-27-044 (HCG 53B) 4.0' SE and MCG +04-27-045 (HCG 53C) 3.3' SE. IC 700 lies 13.9' SSE.
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NGC 3698 = N3695 = U06490 = MCG +06-25-078 = CGCG 185-071 = PGC 35389
11 29 17.3 +35 34 31

See observing notes for N3695.
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NGC 3699 = PK 292+1.1 = E129-PN21 = PN G292.6+01.2
11 27 58.4 -59 57 37
V = 11.0; Size 71"

24" (4/5/08 - Magellan Observatory, Australia): this showpiece planetary appeared very bright, fairly large, ~70" in diameter and gave an excellent contrast response to the UHC filter at 200x. The planetary is bisected by a prominent, broad dark rift that slashes through the planetary from WSW to ENE (like Centaurus A!). The northern lobe is the more prominent: both larger and brighter. The shape of this lobe is semicircular with a round, outer periphery but with a fairly straight edge SW-NE in the interior due to the dark rift. The center of the dust lane is south of the geometric center of the planetary, giving an asymmetric distribution to the lobes. The rift itself is widest at the ENE end and tapers down towards the WSW end. Superb view at 350x as the extra magnification increases the contrast and confirms that the south lobe is fully detached by the dust land at the WSW end. The compact planetary He 2-67 lies in the same field 11' SE.

13.1" (2/17/04 - Costa Rica): at 100x, this planetary appeared moderately bright and large, ~60"-65" in size. There was a good contrast gain with a UHC filter at 105x and 166x and it appeared brightest on the north side of the planetary. A dark rift running WSW-ENE appears to nearly detach the smaller and fainter southern section.

18" (7/7/02 - Magellan Observatory, Australia): at 128x this interesting planetary is moderately bright, fairly large, ~70" in diameter with some faint stars superimposed. With the UHC filter the appearance is very unusual with a dark rift bisecting it in a WSW-ENE orientation just below the geometric center. At 228x, the northern "hemisphere" is both larger and brighter with an irregular surface brightness. A mag 13 star is ~1' NW. This is a fascinating planetary set in a beautiful Centaurus star field with an appearance similar to faint HII region or a small version of Cen A!
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NGC 3700 = UGC 06494 = MCG +06-25-079 = CGCG 185-073 = PGC 35413
11 29 38.6 +35 30 53
V = 14.0; Size 1.0x0.7; Surf Br = 13.6; PA = 130d

17.5" (4/18/98): faint, fairly small, elongated 3:2 ~N-S, 1.0'x0.7', weak concentration. Similar to N3695 5.7' NW and third in trio with N3694. The orientation given matches the main bar - a fainter outer ring oriented NW-SE was not seen.

Discovered by Ball at Birr Castle on 31 Mar 1867 in the observation of N3694. The NGC position for N3700 is 20 tsec W and 6' S of U06494 = M+06-25-079 = CGCG 185-073. Ball also states "the 2 nf ones, Pos 310, Dist 339" [N3695 and N3700] which precisely matches the separation and position angle of U06480 and U06494. This suggests N3694 = U06480 and N3700 = U06494.
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NGC 3701 = UGC 06493 = MCG +04-27-048 = CGCG 126-068 = PGC 35405
11 29 28.9 +24 05 36
V = 12.9; Size 1.9x0.9; Surf Br = 13.4; PA = 145d

18" (4/9/05): fairly faint, fairly small, elongated 2:1 NNW-SSE, 1.0'x0.5', weak concentration with a central bulge. A mag 14 star lies 0.9' N of center.
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NGC 3702 = MCG -01-29-026 = PGC 35448
11 30 13.4 -08 51 47
V = 14.2; Size 1.4x0.9; Surf Br = 14.3; PA = 158d

17.5" (3/29/85): faint, small, slightly elongated, even surface brightness.

Leavenworth's position (II) is 1.0 tmin W and 8' S of M-01-29-026 (identified as N3702 in RNGC but not MCG). Leavenworth describes two mag 10 stars 30 tsec W and 30 tsec E. There is a mag 9-10 star 20 tsec ENE and a mag 13 GSC star 20 tsec W so this identification is very uncertain. Listed as a dubious object by Hagen (probably not found).
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NGC 3704 = MCG -02-29-037 = NPM1G -11.0300 = PGC 35435
11 30 04.6 -11 32 47
V = 13.5; Size 1.5x1.3; Surf Br = 14.1; PA = 150d

17.5" (3/29/85): fairly faint, very small, round, bright core. A mag 15 star is 42" E of center. Forms a close pair with N3707 1.7' E. Located 2.6' ESE of a mag 10 star.

Common's position is 13' N (rough positions given in his discovery list in Copernicus 1) of M-02-29-037 = NPM1G -11.0300 but his description is a perfect match for this pair (with N3707). This galaxy was independently found by Temple (V). Howe could only find one nebula on 4 nights of searching. The RNGC/MCG position is 2' too far north.
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NGC 3705 = UGC 06498 = MCG +02-29-039 = CGCG 067-093 = PGC 35440
11 30 07.4 +09 16 37
V = 11.1; Size 4.9x2.0; Surf Br = 13.4; PA = 122d

17.5" (2/28/87): bright, fairly large, small bright core, elongated 5:2 WNW-ESE, 4.0'x1.6'. N3692 lies 26' WNW.
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NGC 3706 = ESO 378-006 = MCG -06-25-022 = PGC 35417
11 29 44.4 -36 23 29
V = 11.3; Size 3.0x1.8; Surf Br = 13.1; PA = 78d

13.1" (2/17/04 - Costa Rica): at 166x, moderately bright, moderately large, elongated 3:2 WSW-ENE, 1.5'x1.0'. Contains a bright, sharply defined 40" core and much fainter extensions.
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NGC 3707 = NPM1G -11.0301 = PGC 35446
11 30 11.5 -11 32 37
V = 15.4; Size 0.5x0.4; Surf Br = 13.5

17.5" (3/29/85): extremely faint and small, round. Picked up 2.6' E of N3704. Incorrectly listed as nonexistent in the RNGC.

N3704 and N3707 are attributed to both Common and Tempel in the NGC. Common's description in Copernicus, Vol 1 reads "2, F, R, on the parallel, star symmetrically placed between." Howe could only find 1 object on 4 nights.

13' due S of Common's single position (obtained from the setting circles) is a very faint pair of galaxies observed in my 17.5". The first of these galaxies is N3704 = M-02-29-037 at 11 30 04.6 -11 32 48 (2000) which has a mag 15 star 42" E. N3704 also has an extremely faint and compact companion 1.7' E with the mag 15 star between the galaxies as in Common's description, so it is a reasonable match for N3707 at 11 30 11.6 -11 32 37. For some reason, the RNGC ignores the second fainter galaxy of the pair and lists N3707 as nonexistent.

Unfortunately, the NGC summary descriptions (from Tempel?) have some errors. The listing for N3704 mentions a mag 9-10 2' SSE of N3704, although the bright star is actually 2.6' WNW. Additionally, the description for N3707 mentions a "*15 (neb?) 2s following", which actually describes the mag 15 star 2.8 tsec following N3704. Nevertheless, Common's description is sufficient to identify this pair of galaxies. See RNGC Corrections #4.
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NGC 3710 = UGC 06504 = MCG +04-27-052 = CGCG 126-078 = NPM1G +23.0261 = PGC 35502
11 31 07.0 +22 46 05
V = 13.1; Size 1.0x0.8; Surf Br = 12.8; PA = 105d

17.5" (4/9/99): faint, small, round, well-defined 30" halo is weakly concentrated but no noticeable core. Located 4.5' SW of mag 7.8 SAO 81865. A mag 15 star lies 1.3' SE and a pair of similar stars 2' NW.
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NGC 3711 = MCG -02-29-035 = PGC 35392
11 29 25.5 -11 04 46
V = 14.0; Size 0.8x0.4; Surf Br = 13.5; PA = 165d

16" LX200 (4/14/07): extremely faint, small, elongated 2:1 N-S, 0.6'x0.3'. Located 2.4' N of a mag 11 star. The observation may have been made through some clouds.

17.5" (3/29/85): extremely faint, very small, round. A mag 11 star is 2.4' S of center.
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NGC 3712 = UGC 06506 = MCG +05-27-082 = CGCG 156-090 = Arp 203 = PGC 35507
11 31 09.2 +28 34 05
V = 14.0; Size 1.7x0.6; Surf Br = 13.9; PA = 160d

18" (3/17/07): extremely faint, small, elongated. Occasionally I glimpsed a very low surface brightness hazy patch with no concentration that was elongated, perhaps 0.4'x0.2', that was extended in the direction of couple of stars with a third star nearby making a triple. Located ~8' NE of mag 6.7 HD 100041.

This number (from John Herschel) is probably just a duplicate observation of N3714 according to Harold Corwin. In which case, the observation above refers to UGC 6506 which should not be assigned an NGC designation.

Observed twice by JH (h905). He mentioned the PD was rough as the object was observed well past meridian. h905 was not found by Bigourdan and Reinmuth notes "only *14.5 nr Dreyer's place; 2 neb np." RC3 and RNGC identify NGC 3712 = U06506 = MCG +05-27-082 = Arp 203. JH's position is off by <10' from this galaxy, so this identification seems plauisible. I assume UGC 06506 is one of Reinmuth's "2 neb np". UGC 06506 is not identified as NGC 3712 in UGC, MCG or CGCG.
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NGC 3713 = UGC 06511 = MCG +05-27-084 = CGCG 156-094 = PGC 35546
11 31 42.0 +28 09 13
V = 13.2; Size 1.2x0.8; Surf Br = 13.1; PA = 125d

18" (5/30/03): moderately bright, fairly small, elongated 3:2 NW-SE, 1.0'x0.7', small bright core. Collinear with a mag 11.5 star 5' WNW and a mag 13 star 8.5' WNW.

17.5" (4/9/99): fairly faint, small, slightly elongated NW-SE, 0.8'x0.6', bright core increases to a quasi-stellar nucleus, halo is ill-defined. Brightest of 4 in region with N3714 13' NNE, UGC 6522 11' SE and CGCG 156-92 5.5' NW.
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NGC 3714 = UGC 06516 = MCG +05-27-085 = CGCG 156-095 = PGC 35556
11 31 53.6 +28 21 31
V = 14.1; Size 0.5x0.4; Surf Br = 12.2; PA = 68d

18" (4/9/05): fairly faint, small, round, 25" diameter, fairly high surface brightness (like the core of a larger galaxy), moderate concentration though no nucleus.

18" (5/30/03): fairly faint, small, round, 0.4' diameter, weak concentration. Appears similar to the core of a larger galaxy. N3713 lies 13' SSW.

17.5" (4/9/99): very faint, very compact galaxy ~20" in diameter, brightens somewhat to center. Picked up at 100x along with brighter N3713 located 13' SSW.
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NGC 3715 = MCG -02-29-041 = PGC 35540
11 31 32.3 -14 13 53
V = 11.1; Size 1.5x1.0; Surf Br = 11.4; PA = 145d

17.5" (5/2/92): fairly faint, fairly small, round, 40" diameter, even concentration, bright core, smoothly increases to core. A mag 10.5 star is 5.0' NNW of center.
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NGC 3716 = UGC 06513 = MCG +01-30-001 = CGCG 040-001 = PGC 35545
11 31 41.2 +03 29 16
V = 13.5; Size 0.7x0.6; Surf Br = 12.6; PA = 150d

17.5" (5/4/02): fairly faint, fairly small, round, 40" diameter, weak even concentration. Located just west of the midpoint of a line connecting two mag 10 stars oriented N-S and separated by 8'.
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NGC 3717 = ESO 439-015 = MCG -05-27-015 = UGCA 238 = PGC 35539
11 31 32.0 -30 18 28
V = 11.2; Size 6.0x1.1; Surf Br = 13.1; PA = 33d

18" (3/19/04): moderately bright, moderately large, very elongated SSW-NNE, 2.5'x0.5', small brighter core, fades at the ends of the thin extensions. A mag 13 star is attached near the NNE end and this galaxy appears like a dagger attached to the brighter star. Located 7' ESE of mag 9 SAO 179951. Photographs reveal a strong dust lane but this was not noticed visually.

8" (5/21/82): faint, small, very elongated ~N-S, thin, moderately large. Located 10' SE of mag 8.5 SAO 179951 and 1¡ SSW of N Crateris (V = 5.8). Forms a pair with IC 2913 7.3' SE (not seen).
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NGC 3718 = UGC 06524 = MCG +09-19-114 = CGCG 268-048 = Arp 214 = PGC 35616
11 32 35.0 +53 04 05
V = 10.8; Size 8.1x4.0; Surf Br = 14.4; PA = 15d

13.1" (3/24/84): fairly bright, fairly large, broad concentration, almost round. Double star h2574 = mag 11/11 at 35" separation is 2.2' SSW of center. N3729 lies 12' ENE. The galaxy chain HCG 56 = UGC 6527 = VV 150 lies 7' S.
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NGC 3719 = UGC 06521 = MCG +00-30-005 = CGCG 12-008 = PGC 35581
11 32 13.4 +00 49 09
V = 13.0; Size 1.8x1.3; Surf Br = 13.8; PA = 15d

17.5" (5/10/86): moderately large, fairly diffuse, almost round, broad weak concentration. Forms a close pair with N3720 2.2' ESE.
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NGC 3720 = UGC 06523 = MCG +00-30-006 = CGCG 12-010 = PGC 35594
11 32 21.6 +00 48 15
V = 13.0; Size 1.0x0.9; Surf Br = 12.6; PA = 85d

17.5" (5/10/86): moderately bright, fairly small, round, sharp concentration. Appears smaller but slightly brighter than N3719 2.2' WNW.
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NGC 3722 = MCG -01-30-005 = NPM1G -09.0437 = PGC 35746
11 34 23.3 -09 40 48
V = 15.0; Size 0.8x0.8; Surf Br = 14.4

18" (5/12/07): very faint, very small, round, 15" diameter, low even surface brightness. First of three in a 4' string with N3724 1.8' NE and MCG -01-30-008 4' NE. N3730 (MCG -01-30-003) lies 6.4' NNW and N3732 10' SSW.

17.5" (4/5/97): extremely faint, very small, round, 15" diameter. First of close trio with MCG -01-30-007 = N3724 (uncertain ID) 1.8' NE and MCG -01-30-008 4.0' NE. Also nearby is MCG -01-30-003 (possibly N3730) 6.4' NNW and a two anonymous galaxies 9' and 10' NNE. Located 10' NNE of N3732. The galaxies in this group have uncertain NGC designations due to poor positions by Leavenworth.
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NGC 3723 = MCG -02-30-002 = NPM1G -09.0433 = PGC 35604
11 32 30.6 -09 58 11
V = 13.3; Size 1.1x0.9; Surf Br = 13.1

18" (3/19/04): fairly faint, small round, 25" diameter, weak concentration to a very small brighter nucleus. In a group of mostly faint galaxies with several uncertain NGC designations from Leavenworth (N3721, N3722, N3724) ~35' NE and N3732 which is 26' ENE.
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NGC 3724 = MCG -01-30-007 = PGC 35757
11 34 28.7 -09 39 37
V = 14.2; Size 1.6x0.7; Surf Br = 13.8; PA = 55d

18" (5/12/07): extremely faint, very small, elongated 3:2 or 2:1 SW-NE, ~20"x12". Second of three in a 4' string with N3722 1.8' SE and MCG -01-30-008 2.3' ENE.

17.5" (4/5/97): extremely faint, small, elongated 2:1 SW-NE. Brightest in close trio with MCG -01-30-005 = N3722: 1.8' SE and MCG -01-30-008 2.3' NE, although still required averted vision. The NGC identifications in the group (from Leavenworth) are uncertain due to poor positions and several nearby faint galaxies.

Discovered by Leavenworth (II) and described as the 2nd of two with N3722. Corwin notes the identification N3724 = M-01-30-007 is quite uncertain due to imprecise coordinates from Leavenworth and several galaxies in the vicinity. M-01-30-007 is NE of M-01-30-005 but the discovery position placed it SE. It is also possible that N3724 = M-01-30-008 close NE (3rd of 3 on line) although this galaxy was the faintest visually of the trio. RNGC places N3724 south of N3722, although the rectangular coordinates correctly place it north. The New Description appears to refer to M-01-30-007. The MCG does not identify MCG -01-30-007 as N3724.
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NGC 3725 = UGC 06542 = MCG +10-17-015 = CGCG 291-078 = CGCG 292-005 = Mrk 179 = PGC 35698
11 33 40.6 +61 53 16
V = 13.0; Size 1.2x0.9; Surf Br = 13.0; PA = 145d

17.5" (4/14/01): fairly faint, fairly small, elongated 4:3 NNW-SSE, 1.0'x0.7', weak concentration to a small, slightly brighter coire. A mag 14 star is 1' SE of center. UGC 6528 lies 7.6' SW. A nice edge-on N3762 lies 27' ESE.
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NGC 3726 = UGC 06537 = MCG +08-21-051 = CGCG 242-045 = PGC 35676
11 33 21.1 +47 01 45
V = 10.4; Size 6.2x4.3; Surf Br = 13.8; PA = 10d

17.5" (4/6/91): bright, large, oval 2:1 N-S, 5.0'x2.5', patchy mottled appearance, very small or stellar nucleus but no core. A mag 12 star is at the N tip 2.4' from the center.
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NGC 3727 = NPM1G -13.0331 = PGC 35697
11 33 40.9 -13 52 44
V = 14.1; Size 0.8x0.6; Surf Br = 13.1; PA = 78d

18" (4/29/06): very faint, very small, round, 15" diameter. A mag 11.5 star lies 1.3' SE. N3734 lies 19' SE.
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NGC 3728 = UGC 06536 = MCG +04-27-061 = CGCG 126-087 = NPM1G +24.0248 = PGC 35669
11 33 15.8 +24 26 49
V = 13.0; Size 2.0x1.5; Surf Br = 14.1; PA = 25d

17.5" (5/4/02): fairly faint, fairly small. Contains a bright core and stellar nucleus surrounded by faint extensions SSW-NNE, 1.0'x0.6'. A nice mag 9/10 pair at 12" lies 11' SW.
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