NGC 820
| NGC 820 | |
|---|---|
 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]
NGC 820 Group
[edit]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
[edit]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
[edit]References
[edit]- ^ a b 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.
- ^ a b c d e "NGC 820". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-24.
- ^ a b 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.
- ^ a b "Results for object NGC 0820". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 7 May 2025.
- ^ Ford, Dominic. "The galaxy NGC 820 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-03-18.
- ^ Rojas, Sebastián García. "Galaxy NGC 820 - Spiral Galaxy in Aries Constellation". Telescopius. Retrieved 2020-03-18.
- ^ "Revised NGC Data for NGC 820". spider.seds.org. Retrieved 2020-03-18.
- ^ 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.
- ^ Puckett, T.; Newton, J. (2002). "Supernova 2002ea in NGC 820". International Astronomical Union Circular. 7936: 1. Bibcode:2002IAUC.7936....1P.
- ^ "SN 2002ea". Transient Name Server. IAU. Retrieved 7 May 2025.
External links
[edit]
Media related to NGC 820 at Wikimedia Commons
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