Édouard Stephan discovered NGC 5934 = St XI-33, along with NGC 5935, on 12 Jun 1880. His position is accurate. Harold Corwin notes that NGC 5935 is misidentified in the UGC Notes (for NGC 5934 = UGC 9862) as "NGC 5934."

400/500mm - 17.5" (6/21/93): faint, fairly small, elongated 2:1 N-S, weak concentration. A mag 12.5 star is 1.9' E of center. A closely matched mag 13/13.5 double star at 20" separation is 2' WNW. A wide unequal mag 7.6/9.7 pair at 41" separation lies 7' WSW. Forms a very close pair with NGC 5935 1.1' NE. First in a group of five including NGC 5945 16' E, NGC 5943 19' ESE, NGC 5947 and 29' ESE.

600/800mm - 24" (7/28/16): at 375x; fairly faint or moderately bright, fairly small, oval 2:1 N-S, 0.6'x0.3', broad concentration. There appears to be a very low surface brightness hazy extension off the southwest side with averted vision (confirmed on the DSS and SDSS as a tidal plume). Forms an interacting pair with NGC 5935 1.1' NE. Located 6.5' NE of a mag 7.5 star (very wide pair with a mag 9.8 star). A mag 13/13.5 pair at ~20" is 2' NW. In a group (distance ~250 million l.y. including NGC 5945 17' E and NGC 5943 19' SE

CGCG 222-012 = PGC 55173 lies 4.8' N. It appeared faint, fairly small, elongated 2:1 WSW-ENE, 30"x15", low even surface brightness (no core or zones). A mag 14.3 star is at the north edge.

Notes by Steve Gottlieb