Right ascension 00 10 46.9 Redshift 0.015911 Type SAB(s)bc Constellation Andromeda | Declination +33° 21′ 10″ Helio radial velocity 4770 ± 4 km/s Magnitude 12.8 Apparent magnitude (V) 12.8 | |
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Distance 234 ± 29 Mly
(71.7 ± 8.9 Mpc) Similar NGC 27, NGC 22, NGC 26, NGC 23, NGC 19 | ||
NGC 21 (also known as NGC 29) is a spiral galaxy in the Andromeda constellation.
References
NGC 21 Wikipedia(Text) CC BY-SA