NGC 6251
Sign in to saveAlso known as New General Catalogue 6251
Seyfert galaxy in the constellation Ursa Minor
In the Vinony graph
Vinony's link graph records 337 inbound references to NGC 6251, and connects out to list of stars in Ursa Minor, Ursa Minor and Lagoon Nebula.
It is catalogued under topics including Elliptical galaxies, NGC objects and Principal Galaxies Catalogue objects.
Vinony links it to 29 Wikipedia language editions.
Key facts
- Constellation
- Ursa Minor
- Right ascension
- 16 32 31.9700
- Declination
- +82 ° 32 ′ 16.400 ″
- Distance
- 340 million light-years
- Type
- E
- Apparent size v
- 1.82´X1.55´
via Wikipedia infobox
Wikidata facts
- Instance of
- blazar
- Constellation
- Ursa Minor
- Image
- NGC 6251HST.jpg
Show 11 more facts
- catalog code
- Gaia DR2 1722820478889987840
- galaxy morphological type
- E
- redshift
- 0.023940
- Commons category
- NGC 6251
- discoverer or inventor
- William Herschel
- time of discovery or invention
- 1802-01-01
- apparent magnitude
- 9.026
- right ascension
- 248.133207917667
- declination
- 82.537888876111
- radial velocity
- 7091
- epoch
- J2000.0
via Wikidata · CC0
~1 min read
Encyclopedic overview
NGC 6251 is an active supergiant elliptical radio galaxy in the constellation Ursa Minor, and is more than 340 million light-years away from Earth. The galaxy has a Seyfert 2 active galactic nucleus, and is one of the most extreme examples of a Seyfert galaxy. This galaxy may be associated with gamma-ray source 3EG J1621+8203, which has high-energy gamma-ray emission. It is also noted for its one-sided radio jet—one of the brightest known—discovered in 1977. The supermassive black hole at the core has a mass of (5.9±2.0)×10 M☉.
References
Excerpted from Wikipedia’s “NGC 6251” article, available under the CC BY-SA 4.0 licence.