Alphonse Borrelly discovered NGC 3934, along with NGC 3933, around 1871 with a 7.2-inch comet-seeker at the Marseille Observatory. His description (6) reads "eF, nearly round, almost undiscernable" and his micrometric position in AN 1885 matches UGC 6839. Dreyer included the discovery in the GC Supplement (5589). The pair was independently found by Pechüle in 1884 in Copenhagen.

400/500mm - 17.5" (3/29/89): faint, fairly small, slightly elongated, low surface brightness. A mag 13 star is 2.0' N. Forms a pair with NGC 3933 3.6' SW.

Notes by Steve Gottlieb