Albert Marth discovered NGC 3101 = m 193 on 22 Jan 1865 and noted "eF". His position matches CGCG 008-024. A tight group of four NGC galaxies found by Marth lies 15' west.

400/500mm - 18" (3/11/07): very faint, small, elongated ~2:1 NNW-SSE, 0.5'x0.2', very weak concentration. A small group of 4 NGC galaxies with brightest member NGC 3090 lies 10' to 20' W.

Notes by Steve Gottlieb