Astronomy:NGC 7012
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| NGC 7012 | |
|---|---|
 In this picture by the legacy surveys, NGC 7012 is surrounded by smaller galaxies. The star TYC 7977-850-1 is also visible at the lower right. | |
| Observation data (J2000 epoch) | |
| Constellation | Microscopium |
| Right ascension | 21h 06m 45.5s[1] |
| Declination | −44° 48′ 53″[1] |
| Redshift | 0.029347[1] |
| Helio radial velocity | 8,798 km/s[1] |
| Distance | 380 Mly (117 Mpc)[1] |
| Apparent magnitude (V) | 13.65[1] |
| Absolute magnitude (B) | -23.53 ± 0.51[1] |
| Characteristics | |
| Type | cD4 pec[1] |
| Size | ~540,600 ly (165.75 kpc) (estimated)[1] |
| Apparent size (V) | 2.5 x 1.4[1] |
| Other designations | |
| ESO 286-51, AM 2103-450, PGC 66116[1] | |
NGC 7012 is a large, bright[2] elliptical galaxy located about 380 million light-years away from Earth in the constellation Microscopium.[3][4] NGC 7012 was discovered by astronomer John Herschel on July 1, 1834.[5] NGC 7012 is host to a supermassive black hole with an estimated mass of 4.5 billion M☉.[6] NGC 7012 is very large galaxy, with an estimated diameter of nearly 550,000 light years.[4]
Abell S0921
NGC 7012 is the brightest member in the center of a small compact group of interacting galaxies[7] known as Abell S0921.[8] Due to it also being the dominant member of the group, NGC 7012 is classified as a Cd galaxy.[9] The group has about seven major galaxies with many other more distant, fainter galaxies that are probably also associated.[2]
See also
- Elliptical galaxy
- List of NGC objects (7001–7840)
- List of galaxy groups and clusters
- List of largest galaxies
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "NASA/IPAC Extragalactic Database". Results for NGC 7012. http://nedwww.ipac.caltech.edu/.
- ↑ 2.0 2.1 "NGC/IC Project Restoration Efforts". http://www.ngcicproject.org/NGC/NGC_70xx/NGC_7012.htm.
- ↑ Rojas, Sebastián García. "Galaxy NGC 7012 Deep Sky Objects Browser" (in en). https://dso-browser.com/deep-sky/8199/ngc-7012/galaxy.
- ↑ 4.0 4.1 "Your NED Search Results". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+7012&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.
- ↑ "New General Catalog Objects: NGC 7000 - 7049" (in en-US). http://cseligman.com/text/atlas/ngc70.htm.
- ↑ Arzoumanian, Zaven; Baker, Paul T.; Brazier, Adam; Brook, Paul R.; Burke-Spolaor, Sarah; Becsy, Bence; Charisi, Maria; Chatterjee, Shami et al. (2021-06-01). "The NANOGrav 11 yr Data Set: Limits on Supermassive Black Hole Binaries in Galaxies within 500 Mpc". The Astrophysical Journal 914 (2): 121. doi:10.3847/1538-4357/abfcd3. ISSN 0004-637X. Bibcode: 2021ApJ...914..121A.
- ↑ "ACO S 921". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=ACO+S+921.
- ↑ "Your NED Search Results". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=ACO+S921&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.
- ↑ "Detailed Object Classifications". http://ned.ipac.caltech.edu/cgi-bin/NEDatt?objname=NGC+7012.
External links
- NGC 7012 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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