Heinrich d'Arrest discovered NGC 3929 on 4 Dec 1861 with the 11-inch refractor at Copenhagen. His position, measured on 2 nights, matches UGC 6832 and he accurately placed the mag 11 star that follows by 5.3 seconds of RA and 1' south.

400/500mm - 17.5" (4/7/89): fairly faint, very small, elongated WNW-ESE, bright core. A mag 14.5 star is at the SE end 0.5' from center. Located at the center of triangle formed by a mag 11 star 1.7' SE and two mag 13.5 stars 1.8' N and 2.0' W. NGC 3940 lies 12' E. Member of the NGC 3937 group.

Notes by Steve Gottlieb