File:NGC29_-_SDSS_DR14.jpg · Wikimedia Commons · See Wikimedia Commons
Q34500
Sign in to saveAlso known as New General Catalogue 21, New General Catalogue 29
spiral galaxy in the constellation Andromeda
Key facts
- Constellation
- Andromeda
- Right ascension
- 00 10 46.9
- Declination
- +33 ° 21 ′ 10 ″
- Heliocentric radial velocity
- 4,770 ± 4 km/s
- Distance
- 234 ± 29 M ly , (71.7 ± 8.9 M pc )
- Apparent magnitude v
- +12.8
- Type
- SAB(s)bc
- Apparent size v
- 1.2′ × 0.59′
via Wikipedia infobox
~1 min read
Encyclopedic overview
NGC 21 (also known as NGC 29) is a spiral galaxy in the Andromeda constellation. It was discovered by German-British astronomer William Herschel on 26 November 1790. Lewis Swift observed it again in 1885, leading to its double listing in the New General Catalogue.
NGC 7831 Group
Excerpted from Wikipedia’s “Q34500” article, available under the CC BY-SA 4.0 licence.