William Herschel discovered NGC 5902 = H III-737 on 1 May 1788 (sweep 840) and recorded "vF, vS, stellar." CH's reduction is 0.2 min of RA east and 3' south of CGCG 274-035 = PGC 54394.
400/500mm - 17.5" (5/23/87): fairly faint, round, small, bright core.
Notes by Steve Gottlieb