NGC 304

NGC 304 is a lenticular galaxy in the constellation Andromeda. It was discovered on October 23, 1878, by Édouard Stephan.^[3]

NGC 304
SDSS image of NGC 304
Observation data (J2000 epoch)
Constellation	Andromeda
Right ascension	00h 56m 06.0s[1]
Declination	+24° 07′ 37″[1]
Redshift	0.016648[1]
Heliocentric radial velocity	4,991 km/s[1]
Apparent magnitude (V)	14.01[1]
Characteristics
Type	S0[2]
Apparent size (V)	1.1' × 0.7'[1]
Other designations
UGC 00573, CGCG 480-023, MCG +04-03-018, 2MASX J00560603+2407367, 2MASXi J0056060+240735, PGC 3326.[1]

One supernova, SN 2021dnn (type Ia, mag. 15.3), was discovered in NGC 304 on 22 February, 2021.^[4]