William Herschel discovered NGC 3193 = H II-45 = h693, along with NGC 3190, on 12 Mar 1784 (sweep 166). See notes on NGC 3190.

300/350mm - 13.1" (3/24/84): bright, small bright nucleus, small, round. A mag 9 star is just 1' N.

400/500mm - 17.5" (3/23/85): bright, small, round, stellar nucleus, second brightest in the NGC 3190 group. Located just 1.3' S of mag 9.0 SAO 81279. Third of three with NGC 3190 5.8' SW and NGC 3187 8.8' WSW.

Notes by Steve Gottlieb