NGC 4142 (also MCG 9-20-102, UGC 7140 and PGC 38645) is a magnitude +13.3 barred spiral galaxy located 53 million light-years away in the constellation Ursa Major.
The galaxy was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Windsor Road, Slough, on the 26th April 1789.
Right Ascension 12h 09m 30.2s, Declination +53° 06' 14"
