John Herschel discovered NGC 5772 = h1883 on 12 May 1828 and recorded "pB; pL; R; gbM; 20"; a * 8m np." His position and description matches UGC 9566.

400/500mm - 17.5" (6/21/93): fairly faint, moderately large, elongated 2:1 SW-NE, 1.6'x0.8', small bright core, sharp stellar nucleus. Located 7' SSE of mag 8.9 SAO 45240.

Notes by Steve Gottlieb