NGC 1635 (also PGC 15773, UGC 3126, MCG 0-12-63, ZWG 393.60, IRAS 04375-0038) is a magnitude +12.4 barred spiral galaxy located about 153 million light-years away in the constellation Eridanus.
The galaxy was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Clayhall Farm House in Old Windsor, on the 1st January 1786.
Right Ascension 04h 40m 07.9s, Declination -00° 32' 50"
