Hermann Kobold discovered IC 4011 = K. 2-22 on 22 Apr 1895 with the 18-inch refractor at Strasbourg and recorded "eF, vS, N 15 m."

400/500mm - 17.5" (4/28/90): extremely faint and small, round, barely non-stellar, visible with averted vision only. Located 1.6' N of NGC 4889 in the dense central core of AGC 1656 with numerous galaxies nearby including NGC 4886 1.1' SSW and NGC 4883 2.9' NW.

900/1200mm - 82" (5/5/19, McDonald Observatory): at 613x; fairly bright, fairly small, round, 15" diameter, very small, very bright nucleus. Situtated just 1.6' NNW of NGC 4889 in the core of AGC 1656.

Notes by Steve Gottlieb