Guillaume Bigourdan discovered IC 1091 = Big. 187 on 1 Jun 1888 and recorded "mag 13.4-13.5; diffuse; 40" diameter; stellar nucleus. His position matches PGC 54044.

600/800mm - 24" (6/22/17): at 375x; fairly faint, fairly small, elongated 2:1 NW-SE, ~0.6'x0.3', low even surface brightness, no noticeable core or zones. Located 9.5' NW of NGC 5858.

Notes by Steve Gottlieb