William Lassell discovered NGC 7489 = m523 on 14 Sep 1863 from Malta and recorded "F, S, R; found by L." This was his last of four NGC discoveries and occurred while Marth was already surveying Pegasus for new objects (10 were discovered between the 13th and 17th of Sep). His position is off by 1.5' in dec (too far south).

300/350mm - 13.1" (9/22/84): fairly faint, very diffuse, fairly small. A mag 14 star is very close southwest, just 33" from the center. Located 4.5' SSW of mag 8.9 SAO 91024 and 10.7' WSW of mag 8.3 SAO 91034. NGC 7489 is larger and slightly brighter than IC 5285 8.6' WSW. IC 5285, an unusual ring galaxy, appeared faint, very small, almost round, slightly elongated ~E-W, possible faint stellar nucleus. A very faint mag 14.5 star is at the west edge, 23" from center.

Notes by Steve Gottlieb