William Herschel discovered NGC 5633 = H I-185 = h1818 on 11 May 1787 (sweep 733) and noted "pB, S, mbM." His position is 2' south of UGC 9271. John Herschel made two observations, logging on 26 Apr 1830 (sweep 255), "B; R: vglbM; 40"."

200/250mm - 8" (4/24/82): faint, small, slightly elongated.

400/500mm - 17.5" (5/27/95): fairly faint, elongated 3:2 N-S, 1.2'x0.8', moderate surface brightness, very weak concentration. A right triangle of evenly matched mag 12 stars follows with the closest star 2.6' E. Just off the north vertex is a very faint close double.

Notes by Steve Gottlieb