NGC 3670 (also MCG 4-27-33, UGC 6427 and PGC 35067) is a magnitude +13.5 spiral galaxy located 324 million light-years away in the constellation Leo.
The galaxy was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Datchet, Berkshire, on the 10th April 1785.
Right Ascension 11h 24m 49.6s, Declination +23° 56' 44"
