| NGC 4540 | |
|---|---|
Hubble Space Telescope image of NGC 4540. | |
| Observation data ( J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 34m 50.9s [1] |
| Declination | 15° 33′ 06″ [1] |
| Redshift | 0.004306 [1] |
| Heliocentric radial velocity | 1291 km/s [1] |
| Distance | 64 Mly [2] |
| Group or cluster | Virgo Cluster |
| Apparent magnitude (V) | 12.44 [1] |
| Characteristics | |
| Type | SAB(rs)cd, Sy1 [1] |
| Size | ~39,120 ly (estimated) [1] |
| Apparent size (V) | 1.9 x 1.5 [1] |
| Other designations | |
| PGC 41876, UGC 7742, IRAS 12323+1549, MCG 3-32-74, CGCG 99-93, VCC 1588 [1] | |
NGC 4540 is a spiral galaxy with type 1 Seyfert activity [3] located about 64 million light-years away [4] in the constellation Coma Berenices. [5] NGC 4540 was discovered by astronomer William Herschel on March 21, 1784 [6] and is a member of the Virgo Cluster. [7] [8]
See also
References
- ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 4540. Retrieved 2018-01-04.
- ^ "parsecs to lightyears conversion". Retrieved 2017-09-30.
- ^ Normandin, George P. "Galaxies IC 3528 and NGC 4540, Supernova 2001z". www.kopernik.org. Retrieved 2018-01-05.
- ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-01-05.
- ^ "Revised NGC Data for NGC 4540". spider.seds.org. Retrieved 2018-01-05.
- ^ "New General Catalog Objects: NGC 4500 - 4549". cseligman.com. Retrieved 2018-01-05.
- ^ "The Virgo Cluster". www.atlasoftheuniverse.com. Retrieved 2018-01-05.
- ^ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2018-01-05.
External links
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Media related to
NGC 4540 at Wikimedia Commons - NGC 4540 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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