John Herschel discovered NGC 3964 = h1016 on 30 Mar 1827 and recorded "A * 10m with eF neb 45° sp; 30". The neb by a diagram made at the time is oval, and forms a kind of appendage to the star." His positions on 3 sweeps and descriptions point directly to CGCG 157-050 = PGC 37375.

400/500mm - 17.5" (5/4/02): faint, small, elongated 5:3 WSW-ENE, starry center. A mag 11.5 star lies 0.9' NNE of center. Very close to the Leo-Ursa Major border.

Notes by Steve Gottlieb