Stephane Javelle discovered IC 647 = J. 1-184 on 21 Apr 1892 and noted it was distinct from NGC 3411. The HyperLeda listing for PGC 946616 doesn't list IC 647 as an identity.

400/500mm - 18" (3/29/03): at 300x this tiny companion to NGC 3411 appeared very faint, very small, round, 15" diameter, required averted vision. Located 2.1' ESE of NGC 3411.

Notes by Steve Gottlieb