John Herschel discovered NGC 4221 = h1150 on 3 Apr 1832 and recorded "pB; S; R; psbM; 15"." His single position is accurate.

400/500mm - 17.5" (4/15/93): moderately bright, fairly small, slightly elongated, prominent core, stellar nucleus at moments, very faint larger halo slightly elongated SSW-NNE extends with averted to 1.5'-2.0'. NGC 4210 lies 16' SSW.

Notes by Steve Gottlieb