John Herschel discovered NGC 5639 = h1821 on 15 May 1830 and recorded "vF; R; n of a * 11m; a * 7.8 precedes." His position and description matches UGC 9290. CGCG fails to label this galaxy as NGC 5639.

400/500mm - 17.5" (6/5/99): faint, moderately large, round, low surface brightness, no concentration, slightly elongated E-W. A mag 11.5 star is just 0.9' S of center. Located 3.8' ESE of mag 8 SAO 64162, which detracts from viewing.

Notes by Steve Gottlieb