Hermann Kobold discovered IC 4033 = K. 2-28 on 11 May 1896 with the 18-inch refractor at Strasbourg and recorded "eF, pS, R."

400/500mm - 18" (4/20/12): extremely faint, very small, round, 15" diameter, required averted vision at 322x. Forms a difficult pair with IC 4033 1.0' N. Located just 4.4' E of NGC 4889 in AGC 1656.

Notes by Steve Gottlieb