Édouard Stephan discovered NGC 2789 = St XIII-45 on 13 Mar 1883. His position matches UGC 4875. Brightest in a group.

NGC 3167, found earlier by d'Arrest on 1 May 1862, is probably a duplicate observation. See that number.

400/500mm - 17.5" (3/28/92): fairly faint, small, round, weak concentration, fairly faint stellar nucleus. Slightly fainter than NGC 2783 22' NW, although the listed magnitude is brighter.

Notes by Steve Gottlieb