NGC 24

NGC 24 is a spiral galaxy in the southern constellation of Sculptor, about 23.8 megalight-years distant from the Milky Way.^[3] It was discovered by British astronomer William Herschel in 1785, and measures some 40,000 light-years across.^[7] The general shape of this galaxy is specified by its morphological classification of SA(s)c,^[5] which indicates it is an unbarred spiral with no ring-like structure and moderate to loosely-wound spiral arms. This galaxy is positioned in the vicinity of the Sculptor Group, but is actually a background object that is more than three times as distant. It may form a pair with another background galaxy, NGC 45.^[8]

NGC 24
HST image of NGC 24
Observation data (J2000 epoch)
Constellation	Sculptor
Right ascension	00h 09m 56.542s[1]
Declination	−24° 57′ 47.27″[1]
Redshift	0.00185±0.00001[2]
Heliocentric radial velocity	554.017±2.099 km/s[2]
Distance	23.8 Mly (7.31 Mpc)[3]
Apparent magnitude (V)	12.4[4]
Absolute magnitude (V)	−17.61
Characteristics
Type	SA(s)c[5]
Apparent size (V)	5.7' x 1.5'
Other designations
UGCA 2, ESO 472-G016, MCG-04-01-018, ESO-LV 4720160,[6] PGC 701, CGS 119[4]