NGC 4577 (also NGC 4591, IRAS12366 0617, UGC 7821, VCC 1780, MCG 1-32-124, GWT 42191 and PGC 42319) is a magnitude +13.0 inclined spiral galaxy located 111 million light-years away in the constellation Virgo.
The galaxy was possibly discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Datchet, Berkshire, on the 28th January 1784. The galaxy was rediscovered by Herschel in February 1786 and relisted as NGC 4591.
Right Ascension 12h 39m 12.4s, Declination +06° 00' 44"
