John Herschel discovered NGC 2233 = h3051 (along with NGC 2229, 2230 and 2235) on 30 Nov 1834 and logged "eF; S; the last of 3." His position is accurate.

600/800mm - 24" (4/11/08 - Magellan Observatory, Australia): fairly faint, fairly small, edge-on 4:1 SW-NE, 36"x9", fairly low surface brightness with little or no concentration. Located 2.8' SE of NGC 2230 in the core of the rich cluster AGC 3389 = ACO S585.

Notes by Steve Gottlieb