William Herschel discovered NGC 4150 = H I-73 = h1110 on 13 Mar 1785 (sweep 387) and noted "vB, S." His position is close off the southwest side of UGC 7165. JH made the single observation "B; R: pgmbM; 25"; a * 8m 5' preceding."

400/500mm - 17.5" (4/15/93): fairly bright, moderately large, small very bright core, stellar nucleus, faint halo extends NW-SE to 2.0'x1.3'. Located 6' E of mag 9 SAO 62870.

Notes by Steve Gottlieb