NGC 6251
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| NGC 6251 | |
|---|---|
 Hubble image of the heart of the active galaxy NGC 6251 |
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| Observation data (J2000 epoch) | |
| Constellation | Ursa Minor |
| Right ascension | 16h 32m 31.9700s[1] |
| Declination | +82° 32′ 16.400″[1] |
| Redshift | 0.02471[1] |
| Distance | 340 million light-years[2] |
| Type | E[1] |
| Apparent dimensions (V) | 1.82´X1.55´ |
| Apparent magnitude (V) | 14.3[3] |
| Other designations | |
| NGC 6251, UGC 10501, LEDA 58472, 6C 1636+8239, QSO B1637+826 | |
| See also: Galaxy, List of galaxies | |
NGC 6251 is a Seyfert galaxy[3] located in the constellation Ursa Minor. This galaxy may have an association with gamma-ray source 3EG J1621+8203.[3] This is a radio galaxy, with a linear extent of 3.0 Mpc. It was the largest such known in 1978.[4]
[edit] References
- ^ a b c d "NASA/IPAC Extragalactic Database". Results for NGC 6251. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC++6251&extend=no. Retrieved 2006-10-26.
- ^ "Distance and Length". Online-Unit-Converter.com. http://www.online-unit-converter.com/distance-and-length/. Retrieved 2010-03-29.
- ^ a b c SIMBAD
- ^ New Scientist, "Largest radio galaxy is well organised mechanically", 29 June 1978
[edit] External links
- www.jb.man.ac.uk/atlas/
- Wikisky image of NGC 6251
- Hubble Finds a Bare Black Hole Pouring Out Light (Probing the heart of the active galaxy NGC 6251 -- September 10, 1997)
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