NGC 3813 (also MCG 6-26-19, UGC 6651 and PGC 36266) is a magnitude +11.7 spiral galaxy located 67 million light-years away in the constellation Ursa Major.
The galaxy was discovered by German-British astronomer Frederick William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Datchet, Berkshire, on the 28th April 1785.
Right Ascension 11h 41m 18.5s, Declination +36° 32' 48"