NGC/IC Project Restoration Effort

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NGC4145

 

Basic Information


Location and Magnitude


Right Ascension: 12:10:1.7
Declination: +39:52:58
Constellation: CVN
Visual Magnitude: 11.3

Historic Information


Discoverer: Herschel W.
Year of discovery: 1787
Discovery aperture: 18.7

Observational


Summary description: B, vL, vglbM
Sub-type: SBcd

Steve's Notes

===== NGC 4145 24" (5/30/16): at 200x; fairly bright, very large, roughly oval 4:3 ~E-W, 4'x3', contains a large brighter core and a noticeably patchy or irregular halo with a strong impression of spiral structure. Two arms were fairly confident; one extending east of the core on its south side and another extending west of the core on its north side. Otherwise, it seemed like slightly brighter HII patches in the low surface brightness halo were just resolving in the outer halo. Located 9' due west of mag 6.8 HD 105824. NGC 4145A = UGC 7175 lies 12' SE. It appeared faint to fairly faint, fairly small as often only the 20" slightly elongated core was visible. Sometimes very low surface brightness extensions E-W were seen, increasing the size to ~35"x20", but the full extension of the arms were not detected. 13.1" (3/17/86): fairly faint, fairly large, very diffuse, weak broad concentration, slightly elongated E-W. Located 9' W of mag 6.9 SAO 44055, a distraction for the low surface brightness galaxy. NGC 4151 lies 30' S.