Heinrich d'Arrest discovered NGC 3995, along with NGC 3991, on 5 Feb 1864. His position, measured on 3 nights, is accurate.

400/500mm - 17.5" (2/24/90): moderately bright, moderately large, elongated 5:2 SW-NE, large bright core. Third and largest of an excellent trio with NGC 3994 1.8' SW and NGC 3991 3.8' NW. Located 6.6' W of mag 6.4 SAO 62774.

600/800mm - 24" (5/25/14): fairly bright striking galaxy with unusual asymmetric structure, fairly large, elongated roughly 5:2 SSW-NNE, well concentrated with a very bright core containing a short bar oriented E-W. A long linear arm is attached at the west side of the core and extends south ~40". The outer, western edge of this arm has a sharply defined edge and the inner (eastern) side has a low, irregular surface brightness. A short extension (arm) heads northeast from the east side of the core. As a result the core appears offset towards the north, because of the longer southern arm. Mag 6.4 HD 103928 lies 5' ESE and was placed outside the field.

Notes by Steve Gottlieb