NGC 821
| NGC 821 | |
|---|---|
 Pan-STARRSimage of NGC 821 | |
| Observation data (J2000epoch) | |
| Constellation | Aries |
| Right ascension | 02h08m21.150s[1] |
| Declination | +10° 59′ 41.53″[1] |
| Redshift | 0.005814[2] |
| Heliocentric radial velocity | 1738 km/s[2] |
| Distance | 75.8Mly(23.23Mpc)[3] |
| Apparent magnitude(V) | 11.31[2] |
| Apparent magnitude(B) | 12.21[2] |
| Characteristics | |
| Type | E6[2] |
| Other designations | |
| UGC1631,MCG+02-06-034,PGC8160[2] | |
NGC 821is anelliptical galaxyin theconstellation Aries.It is estimated to be about 80 millionlight-yearsfrom theMilky Way[3]and has adiameterof approximately 55,000 light years. NGC 821 was discovered on September 4, 1786, byastronomerWilhelm Herschel.[4][5][6]
See also
[edit]References
[edit]- ^abSkrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006)."The Two Micron All Sky Survey (2MASS)".The Astronomical Journal.131(2): 1163–1183.Bibcode:2006AJ....131.1163S.doi:10.1086/498708.ISSN0004-6256.S2CID18913331.
- ^abcdef"NGC 821".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2020-05-24.
- ^abTully, 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.S2CID250737862.50.
- ^Ford, Dominic."The galaxy NGC 821 - In-The-Sky.org".in-the-sky.org.Retrieved2020-03-28.
- ^"Revised NGC Data for NGC 821".spider.seds.org.Retrieved2020-03-28.
- ^"Your NED Search Results".ned.ipac.caltech.edu.Retrieved2020-03-28.
External links
[edit]
Media related toNGC 821at Wikimedia Commons
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