William Herschel discovered NGC 665 = H II-588 on 4 Sep 1786 (sweep 582) and logged "F, irr R, r." The NGC position is accurate.

400/500mm - 17.5" (12/18/89): fairly faint, fairly small, oval WNW-ESE, prominent core, bright nucleus. Brightest in a group of four with IC 154 14' NNE, IC 156 11NE and CGCG 437-020 6' SE.

Notes by Steve Gottlieb