John Herschel discovered NGC 4573 = h3401 on 15 Mar 1836 and recorded "vF; S; almost exactly south of a * 10m, 30" dist." His position and description matches ESO 268-026 = PGC 42167.

300/350mm - 14" (4/2/16 - Coonabarabran, 160x): fairly faint to moderately bright, fairly small, slightly elongated E-W, ~0.8'x0.6', increases in size with averted. Using direct vision a stellar nucleus was seen. A mag 10.5 star is 1' N, close off the north edge. Located 16' SE of mag 7.6 HD 109638.

Notes by Steve Gottlieb