Albert Marth discovered NGC 7409 = m 504, along with NGC 7411 and 7415, on 20 Sep 1863 and simply noted "eF". His position is accurate.
400/500mm - 17.5" (9/2/89): extremely faint and small, round. A mag 13 star 1.2' NW. Located 11' WSW NGC 7411 in a group.
Notes by Steve Gottlieb