William Herschel discovered NGC 4370 = H II-144 = h1236 on 13 Apr 1784 (sweep 191) and recorded "Two unequal nebula; one of them [III-97 = NGC 4366] eF." His position is 14 sec of RA west of UGC 7492 = PGC 40439.

400/500mm - 17.5" (3/28/87): fairly faint, fairly small, slightly elongated ~E-W, weak concentration. NGC 4365 lies 10.1' SW.

Notes by Steve Gottlieb