William Herschel discovered NGC 5789 = H III-976 = h1890 on 21 May 1802 (late sweep 1107) and recorded "eF, S, iF." CH's reduction is 6 sec of RA west of UGC 9615. JH called this galaxy "eF; pL; 40...50"."

300/350mm - 13.1" (6/18/85): fairly faint, fairly small, very diffuse, irregularly round, weak concentration. Located 21' NW of NGC 5798.

600/800mm - 24" (7/11/18): at 375x; moderately bright, moderately large, irregularly round, very small brighter core, irregular surface brightness. The star field only includes some relatively few faint stars. Brighter NGC 5798 lies 21' SE and UGC 9588 is 31' W. The UGC appeared faint, small, elongated 3:2 ~E-W, occasional very faint nucleus. A 14th mag star lies 50" SE.

Notes by Steve Gottlieb