NGC 820

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NGC 820
NGC 0820 SDSS.jpg
SDSS image of NGC 820
Observation data (J2000 epoch)
Constellation Aries
Right ascension 02h 08m 24.97482s [1]
Declination +14° 20′ 58.5388″ [1]
Redshift 0.01477 [2]
Heliocentric radial velocity 4395 km/s [2]
Distance 213.5  Mly (65.46  Mpc) [3]
Group or cluster NGC 820 Group (LGG 48)
Apparent magnitude  (B)13.7 [2]
Characteristics
Type Sb [2]
Size~82,900  ly (25.42  kpc) (estimated) [4]
Other designations
IRAS 02057+1406, UGC 1629, MCG +02-06-036, PGC 8165, CGCG 438-031 [2]

NGC 820 is a spiral galaxy located in the constellation Aries about 210 million light-years from the Milky Way. [3] It was discovered by British astronomer John Herschel on 7 September 1828. [5] [6] [4] [7]

Contents

NGC 820 Group

NGC 820 is the largest and brightest of a trio of galaxies. The other two galaxies in the NGC 820 group (also known as LGG 48) are UGC 1630 and UGC 1689. [8]

Supernova

One supernova has been observed in NGC 820: SN 2002ea (type IIn, mag. 17.7) was discovered on 21 July 2002 by Tim Puckett and Jack Newton. [9] [10]

See also

References

  1. 1 2 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 .
  2. 1 2 3 4 5 "NGC 820". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2020-05-24.
  3. 1 2 Tully, R. Brent; Courtois, Hélène M.; Sorce, Jenny G. (2016). "Cosmicflows-3". The Astronomical Journal. 152 (2): 21. arXiv: 1605.01765 . Bibcode:2016AJ....152...50T. doi: 10.3847/0004-6256/152/2/50 . S2CID   250737862. 50.
  4. 1 2 "Results for object NGC 0820". NASA/IPAC Extragalactic Database. NASA and Caltech . Retrieved 7 May 2025.
  5. ↑ Ford, Dominic. "The galaxy NGC 820 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-03-18.
  6. ↑ Rojas, Sebastián García. "Galaxy NGC 820 - Spiral Galaxy in Aries Constellation". Telescopius. Retrieved 2020-03-18.
  7. ↑ "Revised NGC Data for NGC 820". spider.seds.org. Retrieved 2020-03-18.
  8. ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
  9. ↑ Puckett, T.; Newton, J. (2002). "Supernova 2002ea in NGC 820". International Astronomical Union Circular. 7936: 1. Bibcode:2002IAUC.7936....1P.
  10. ↑ "SN 2002ea". Transient Name Server. IAU . Retrieved 7 May 2025.
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