William Herschel discovered NGC 4333 = H II-142 = h1215, along with NGC 4326 and 4329, on 13 Apr 1784 (sweep 191). JH logged "F; pS; R; bM; 15"; the second of 3 in a triangle." and measured an accurate position.

400/500mm - 17.5" (3/28/87): fairly faint, small, round, weak concentration. Forms a pair with NGC 4339 4' NE.

Notes by Steve Gottlieb