NGC 3751 (also Arp 320, HCG 57F, Copeland's Septet, MCG 4-28-9, UGC 6601 and PGC 36017) is a magnitude +14.4 lenticular galaxy located 432 million light years away in the constellation Leo. The galaxy is forms part of Copeland's Septet. The galaxy was discovered by British astronomer Ralph Copeland using a 182.88 cm (72 inch) speculum reflector at Birr Castle on the 5th April 1874.
Right Ascension 11h 37m 53.9s, Declination +21° 56' 13"
