Édouard Stephan discovered NGC 810 = St III-5 on 11 Dec 1871 with the 31" reflector at the Marseille Observatory and recorded "vF, vS, R, more condensed in the center but no bright nucleus". His position matches UGC 1583. Corwin notes the NGC position is 10 tsec too far west (transcription error). A companion (not seen) is superimposed 0.25' following the nucleus, which itself looks double on the SDSS.

400/500mm - 17.5" (12/18/89): faint, small, round, bright core. Located on a line to the SW of mag 7.8 SAO 92789 7' NE and mag 7.2 SAO 92795 19' NE. Appears brighter than the CGCG mag of 15.4.

Notes by Steve Gottlieb