William Herschel discovered NGC 1634 = H III-953 = h324, along with NGC 1633, on 9 Dec 1798 (sweep 1085) and recorded "Two nebulae NGC 1633 & NGC 1634] within 1' of each other; lying in the meridian. Both vF, vS."

300/350mm - 13.1" (1/18/85): forms a double system with NGC 1633. Very faint, extremely small. Appears like a nebulous knot almost in contact close south of NGC 1633. Situated within a group of brighter stars.

Notes by Steve Gottlieb