Astronomy:NGC 821
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Short description: Galaxy in the constellation Aries
| NGC 821 | |
|---|---|
 Pan-STARRS 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] | |
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]
See also
References
- ↑ 1.0 1.1 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 "NGC 821". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+821.
- ↑ 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.
- ↑ Ford, Dominic. "The galaxy NGC 821 - In-The-Sky.org" (in en). https://in-the-sky.org/data/object.php?id=NGC821.
- ↑ "Revised NGC Data for NGC 821". http://spider.seds.org/ngc/revngcic.cgi?NGC%20821.
- ↑ "Your NED Search Results". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+821&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
External links
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