Auguste Voigt discovered IC 3136 in Jun 1865 with the 31-inch silvered-glass reflector at Marseille. The discovery was not published or forwarded to Dreyer, so it was not included in the NGC. Wolfgang Steinicke states his discoveries were only listed in his observation log, which was not published until 1987.

Arnold Schwassmann discovered the galaxy on a plate taken at the Königstuhl Observatory in Heidelberg and his position measured for Sn. 2 on 5 Apr 1894 matches UGC 7349. Bigourdan found it again visually on 31 Mar 1902. Schwassmann was credited with the discovery in the IC.

600/800mm - 24" (4/28/14): fairly faint, fairly small, elongated 5:2 SSW-NNE, 30"x12", even surface brightness. Located 8' NW of NGC 4260.

Notes by Steve Gottlieb