Heinrich d'Arrest discovered NGC 4787 on 3 Apr 1867, measured an accurate position and noted it was 13.6 sec of RA preceding NGC 4789. This galaxy was missed by both WH and JH while viewing nearby NGC 4789.

400/500mm - 17.5" (3/20/93): very faint, fairly small, very elongated 3:1 N-S, low but uneven surface brightness. A mag 10 star lies 2.9' WSW. Forms a pair with NGC 4789 3.0' E. Member of AGC 1656.

Notes by Steve Gottlieb