NGC 3091 (also ESO 566-41, MCG -3-26-7, HCG 42A and PGC 28927) is a magnitude +11.2 elliptical galaxy located 182 million lightyears away in the constellation Hydra.
The galaxy was discovered by German-British astronomer William Herschel using a 47.5-cm (18.7-inch) reflector at Datchet, Berkshire, on the 7th February 1785.
Right Ascension 00h 10m 14.1s, Declination -19° 38' 12"
