NGC/IC Project Restoration Effort

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NGC3651

 

Basic Information


Location and Magnitude


Right Ascension: 11:22:26.3
Declination: +24:17:56
Constellation: LEO
Visual Magnitude: 13.6

Historic Information


Discoverer: Herschel W.
Year of discovery: 1785
Discovery aperture: 18.7

Observational


Summary description: cF, vS, R, bM, np of 2
Sub-type: E0

Steve's Notes

===== NGC 3651 48" (4/18/15): brightest of the 7 members of HCG 51. At 488x, it appeared moderately to fairly bright, round, 0.6' diameter. It forms a merged double system with HCG 51F at the south edge. The companion is faint to fairly faint, very small, elongated 2"1 ~N-S, ~12"x6". The two galaxies were not fully resolved but there is a dip in brightness at the point they merge. NGC 3653 lies 1.5' SE. HCG 51G, just 28" SE, is a faint, round, quasi-stellar knot under 10" diameter. MCG +04-27-030 = HCG 51D is 1' E and appeared fairly faint, small, round, 15" diameter, brighter nucleus. CGCG 126-040 = HCG 51B is 2.8' W and the largest in the septet. It appeared moderately bright, elongated 2:1 N-S, 0.8'x0.4', sharply concentrated with a small bright core. Most catalogues misidentify this galaxy as IC 2759, which lies 1' further NNW. IC 2759 = HCG 51E is also moderately bright but small, round, 18" diameter, sharply concentrated with a small bright core. 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 NGC 3653 (51C) 1.4' SE and MCG +04-27-030 (51D) 1.0' E. MCG +04-27-026 (51B) lies 2.7' W and brighter IC 2759 (51E) is 1' N of 51B. MCG +04-27-026 is very faint, fairly small, elongated 3:2 N-S, 0.9'x0.6', very weak concentration. Larger of close pair with IC 2759 1.0' N but has a significantly lower surface brightness. Modern catalogues misidentify this galaxy as IC 2759. IC 2759 is faint, very small, round, 20" diameter, moderate surface brightness. Finally MCG +04-27-030 is extremely faint and small, 12" diameter. It's the faintest of five in HCG 51.