NGC 7004
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| NGC 7004 | |
|---|---|
| File:NGC 7002 NGC 7004 legacy dr10.jpg NGC 7004 (bottom) and NGC 7002 (top) with legacy survey | |
| Observation data (J2000 epoch) | |
| Constellation | Indus |
| Right ascension | 21h 04m 02.2s[1] |
| Declination | −49° 06′ 51″[1] |
| Redshift | 0.025284 |
| Heliocentric radial velocity | 7580 km/s[1] |
| Distance | 330 Mly (101 Mpc)[1] |
| Apparent magnitude (V) | 13.8[1] |
| Absolute magnitude (B) | -21.87 ± 0.09 [1] |
| Characteristics | |
| Type | (R')SAB0/a?(s)[1] |
| Size | ~139,500 ly (42.78 kpc) (estimated) |
| Apparent size (V) | 1.31× 0.44[1] |
| Other designations | |
| ESO 235-46, FAIR 938, PGC 66019[1] | |
NGC 7004 is a lenticular galaxy[1] and a type 2 Seyfert galaxy[2] around 330 million light-years away from Earth in the constellation Indus.[3][1] NGC 7004 has an estimated diameter of 140,000 light-years.[1] NGC 7004 was discovered by astronomer John Herschel on October 2, 1834.[4] NGC 7004 is a member of a group of galaxies[5] known as [T2015] nest 200093.[6] The group contains 12 member galaxies including NGC 7002, has a velocity dispersion of 440 km/s and an estimated mass of 1.28 × 1014 M☉.[5] NGC 7004 is also host to a supermassive black hole with an estimated mass of 8.1 × 108 M☉.[7]
See also
[edit | edit source]References
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External links
[edit | edit source]- Error creating thumbnail: File missing Media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value). at Wikimedia Commons
- NGC 7004 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
