Albert Marth discovered NGC 7146 = m 456, along with NGC 7147, on 11 Aug 1863 and noted "F, R." His position is 1' too far north.
400/500mm - 17.5" (8/1/86): very faint, small, elongated ~E-W. A brighter star is at the east end. Forms a pair with NGC 7147 4.3' NE.
Notes by Steve Gottlieb