NGC 821
NGC 821 is an elliptical galaxy in the constellation Aries. It is estimated to be about 80 million light-years from the Milky Way[3] and has a diameter of approximately 55,000 light years. NGC 821 was discovered on September 4, 1786 by astronomer Wilhelm Herschel.[4][5][6]
| NGC 821 | |
|---|---|
 DSS image of NGC 821 | |
| Observation data (J2000 epoch) | |
| Constellation | Aries |
| Right ascension | 02h 08m 21.150s[1] |
| Declination | +10° 59′ 41.53″[1] |
| Redshift | 0.005814[2] |
| Helio radial velocity | 1738 km/s[2] |
| Distance | 75.8 Mly (23.23 Mpc)[3] |
| Apparent magnitude (V) | 11.31[2] |
| Apparent magnitude (B) | 12.21[2] |
| Characteristics | |
| Type | E6[2] |
| Other designations | |
| UGC 1631, MCG+02-06-034, PGC 8160[2] | |
See also
References
- Skrutskie, M. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708.
- "NGC 821". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-24.
- 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. 50.
- Ford, Dominic. "The galaxy NGC 821 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-03-28.
- "Revised NGC Data for NGC 821". spider.seds.org. Retrieved 2020-03-28.
- "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2020-03-28.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.