NGC 254

NGC 254 is a lenticular galaxy located in the constellation Sculptor. It was discovered by John Herschel in 1834.^[4] It is in a galaxy group with NGC 134.^[3]

NGC 254
DECam image of NGC 254
Observation data (J2000 epoch)
Constellation	Sculptor
Right ascension	00h 47m 27.595s[1]
Declination	−31° 25′ 18.11″[1]
Redshift	0.005434[2]
Heliocentric radial velocity	1629[2]
Distance	55.8 Mly (17.10 Mpc)[2]
Apparent magnitude (V)	11.82[1]
Apparent magnitude (B)	11.62[1]
Characteristics
Type	(R)SA(rl)0+[3]
Apparent size (V)	2.6′ × 1.7′[4]
Other designations
MCG-05-03-005, PGC 2778

NGC 254 is an example of a ring galaxy, a galaxy with a ring,^[3] and in this case, no central bar. Across the entire galaxy disk, there is a disk of ionized gas rotating in the direction opposite the stellar disk's rotation.^[3] This situation may have arose when a retrograde-orbiting satellite galaxy accreted onto the galaxy itself, some 1 billion years ago.^[3]

See also

• List of NGC objects