Stephane Javelle discovered IC 593 = J. 2-666, along with IC 592, on 21 Mar 1893. His position is accurate.

600/800mm - 24" (4/14/18): at 282x; faint, small, round, 25" diameter, fairly low even surface brightness. Located 5' E of mag 7.7 HD 87888, far enough away to keep outside the field. Forms a pair with IC 592 5' WNW.

Notes by Steve Gottlieb