William Herschel discovered NGC 4120 = H III-904 on 6 Apr 1793 (sweep 1036) and noted "eF, vS, E from north to south." CH's reduced position is 33 sec of RA west and 2.5' north of UGC 7121.

400/500mm - 17.5" (3/29/89): very faint, thin, very elongated NNW-SSE. A mag 15 star is at the south end 0.5' from center.

Notes by Steve Gottlieb