NGC 252

NGC 252 is a lenticular galaxy located in the constellation Andromeda. It was discovered by William Herschel in 1786.^[4]

NGC 252
SDSS image of NGC 252
Observation data (J2000 epoch)
Constellation	Andromeda
Right ascension	00h 48m 01.484s[1]
Declination	+27° 37′ 25.76″[1]
Redshift	0.016471[2]
Heliocentric radial velocity	4938[2]
Distance	245.54 ± 31.56 Mly (75.283 ± 9.677 Mpc)[2]
Apparent magnitude (V)	13.4
Apparent magnitude (B)	12.49
Characteristics
Type	(R)SA0+(r)[2]
Size	121.4 kly (37.23 kpc)[2]
Apparent size (V)	1.7′ × 1.309′[2]
Other designations
UGC 491, MGC+04-03-004, PGC 2819[3]

One supernova has been observed in NGC 252: SN 1998de (type Ia, mag. 18.4).^[5]