William Herschel discovered NGC 3455 = H II-82 = h791 on 21 Mar 1784 (sweep 181) and recorded ""F, S, lE, r. It's situation is south of a pB star." His position matches UGC 6028 = PGC 32767. On 17 Mar 1831 (sweep 334), John Herschel wrote, "pB; E; gbM; The south-following of 3 [with NGC 3454]; a *9-10m between them."

400/500mm - 17.5" (4/18/87): moderately bright, fairly small, broad concentration, oval elongated 3:2 WSW-ENE. A mag 10.5 star is 2.0' N of center. Forms a pair with NGC 3454 3.6' N. The bright star is symmetrically placed between the galaxies.

600/800mm - 24" (2/22/14): moderately bright, moderately large, elongated 3:2 WSW-ENE, 0.9'x0.6', broad concentration, no distinct core but an irregular surface brightness. Forms a striking pair with NGC 3454 3.6' N. A mag 10.5-11 star is directly between the two galaxies.

Notes by Steve Gottlieb