Stephane Javelle discovered IC 633 = J. 2-692, along with IC 632, on 9 May 1893. His micrometric position is accurate.

400/500mm - 17.5" (3/22/96): very faint, small, very elongated 3:1 WNW-ESE, 0.6'x0.2', low even surface brightness. A mag 11 star is 1.0' NNE of center. Forms a pair with IC 632 3.3' SW. Located 11' S of NGC 3325.

Notes by Steve Gottlieb