NGC 20 (also NGC 6, MCG 5-1-36, UGC 84 and PGC 679) is a magnitude +14.0 lenticular galaxy located 228 million light-years away in the constellation Andromeda. The galaxy is close to a magnitude +10.0 star.
The galaxy was discovered by Irish astronomer R. J. Mitchell, assistant to William Parsons, 3rd Earl of Rosse, using a 182.88 cm (72 inch) speculum reflector at Birr Castle on the 18th September 1857. The galaxy was rediscovered by Lewis Swift in September 1885 and relisted as NGC 6.
Right Ascension 00h 09m 32.8s, Declination +33° 18' 31"
