William Herschel discovered NGC 5400 = H III-667 on 15 Apr 1787 (sweep 730) and noted "eF, vS. 300 verified it." His RA is 9 tsec too large.

400/500mm - 17.5" (5/11/96): faint, small, round, 40" diameter, weakly concentrated. A mag 10.5 star is 4.7' SW.

900/1200mm - 48" (5/16/12): bright, moderately large, slightly elongated ~E-W, ~1.2'x0.9', sharply concentrated with a very bright core and faint outer halo. This bright E or S0 is the brightest and centrally situated in a north-south string of 6 galaxies. The two closest are PGC 140239, 1.7' NNE, and PGC 1080934 just 55" S of center. The first galaxy appeared fairly faint, small, elongated 2:1 WSW-ENE, 18"x9".

Notes by Steve Gottlieb