Astronomy:NGC 820

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NGC 820
File:250px
SDSS image of NGC 820
Observation data (J2000 epoch)
ConstellationAries
Right ascension 02h 08m 24.97482s[1]
Declination+14° 20′ 58.5388″[1]
Redshift0.01477[2]
Helio radial velocity4395 km/s[2]
Distance213.5 Mly (65.46 Mpc)[3]
Group or clusterNGC 820 Group (LGG 48)
Apparent magnitude (B)13.7[2]
Characteristics
TypeSb[2]
Size~82,900 ly (25.42 kpc) (estimated)[4]
Other designations
IRAS 02057+1406, UGC 1629, MCG+02-06-036, PGC 8165[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]

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. ↑ 1.0 1.1 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 "NGC 820". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+820. 
  3. ↑ 3.0 3.1 Tully, R. Brent; Courtois, Hélène M.; Sorce, Jenny G. (2016). "Cosmicflows-3". The Astronomical Journal 152 (2): 21. doi:10.3847/0004-6256/152/2/50. 50. Bibcode: 2016AJ....152...50T. 
  4. ↑ 4.0 4.1 "Results for object NGC 0820". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+0820. 
  5. ↑ Ford, Dominic. "The galaxy NGC 820 - In-The-Sky.org" (in en). https://in-the-sky.org/data/object.php?id=NGC820. 
  6. ↑ Rojas, Sebastián García. "Galaxy NGC 820 - Spiral Galaxy in Aries Constellation" (in en). https://telescopius.com/deep-sky/object/1715/ngc-820/galaxy. 
  7. ↑ "Revised NGC Data for NGC 820". http://spider.seds.org/ngc/revngcic.cgi?NGC820. 
  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. http://www.cbat.eps.harvard.edu/iauc/07900/07936.html#Item1. 
  10. ↑ "SN 2002ea". IAU. https://www.wis-tns.org/object/2002ea. 



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