Astronomy:NGC 822
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| NGC 822 | |
|---|---|
| File:250px DSS image of NGC 822 | |
| Observation data (J2000 epoch) | |
| Constellation | Phoenix |
| Right ascension | 02h 06m 39.13396s[1] |
| Declination | −41° 09′ 24.2724″[1] |
| Redshift | 0.017856[2] |
| Helio radial velocity | 5305 km/s[2] |
| Distance | 233.3 Mly (71.52 Mpc)[3] |
| Apparent magnitude (B) | 14.25[2] |
| Characteristics | |
| Type | E[2] |
| Other designations | |
| MCG-07-05-008, PGC 8055[2] | |
NGC 822 is an elliptical galaxy in the constellation Phoenix. It is estimated to be about 233 million light-years from the Milky Way[3] and has a diameter of approximately 80,000 light-years. NGC 822 was discovered on September 5, 1834, by astronomer John Herschel.[4][5][6]
NGC 822 is a member of the NGC 822 group (also known as LGG 50), which contains three galaxies, including NGC 862 and ESO 298-8.[7]
See also
References
- ↑ 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.
- ↑ 2.0 2.1 2.2 2.3 2.4 "NGC 822". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+822.
- ↑ 3.0 3.1 Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal 655 (2): 790–813. doi:10.1086/510201. Bibcode: 2007ApJ...655..790C.
- ↑ Ford, Dominic. "The galaxy NGC 822 - In-The-Sky.org" (in en). https://in-the-sky.org/data/object.php?id=NGC822.
- ↑ "Revised NGC Data for NGC 822". http://spider.seds.org/ngc/revngcic.cgi?NGC%20822.
- ↑ "Your NED Search Results". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+822&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.
- ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy & Astrophysics Supplement Series 100: 47–90. Bibcode: 1993A&AS..100...47G.
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