NGC 7012
| 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] |
| Heliocentric 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 | E4 pec[1] |
| Size | ~294,200 ly (90.19 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 also is host to a supermassive black hole with an estimated mass of 4.5 × 109 M☉.[6] NGC 7012 is very large galaxy, with an estimated diameter of nearly 300,000 light years.[4]
Abell S0921
[edit]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
[edit]- Elliptical galaxy
- List of NGC objects (7001–7840)
- List of galaxy groups and clusters
- List of largest galaxies
References
[edit]- ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for NGC 7012. Retrieved 2017-05-13.
- ^ a b "NGC/IC Project Restoration Efforts". www.ngcicproject.org. Archived from the original on 2017-09-10. Retrieved 2017-05-13.
- ^ Rojas, Sebastián García. "Galaxy NGC 7012 Deep Sky Objects Browser". DSO Browser. Archived from the original on 2019-12-07. Retrieved 2017-05-11.
- ^ a b "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-05-13.
- ^ "New General Catalog Objects: NGC 7000 - 7049". cseligman.com. Retrieved 2017-05-08.
- ^ Arzoumanian, Zaven; Baker, Paul T.; Brazier, Adam; Brook, Paul R.; Burke-Spolaor, Sarah; Becsy, Bence; Charisi, Maria; Chatterjee, Shami; Cordes, James M.; Cornish, Neil J.; Crawford, Fronefield; Cromartie, H. Thankful; Decesar, Megan E.; Demorest, Paul B.; Dolch, Timothy (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. arXiv:2101.02716. Bibcode:2021ApJ...914..121A. doi:10.3847/1538-4357/abfcd3. ISSN 0004-637X.
- ^ "ACO S 921". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-05-18.
- ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-09-10.
- ^ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2017-11-14.
External links
[edit]- NGC 7012 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
| Stars |
| ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||
| Galaxies |
| ||||||||||||
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.
