Albert Marth discovered NGC 3086 = m 189 on 22 Jan 1865 and recorded "eF, S, iR." His position matches CGCG 008-012 = PGC 28924. Not found by Bigourdan.

400/500mm - 17.5" (3/16/96): very faint, fairly small, elongated 2:1 NW-SE, low even surface brightness. Located 4.8' WSW of NGC 3090 at the west side of the NGC 3090 group.

17.5" (4/4/92): extremely faint, small, round, averted only. Located 5' WSW of NGC 3090 in a group.

Notes by Steve Gottlieb