NGC 4540

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

• List of NGC objects (4001–5000)

NGC 4540 (SDSS DR14)

References

1. "NASA/IPAC Extragalactic Database". Results for NGC 4540. Retrieved 2018-01-04.
2. "parsecs to lightyears conversion" . Retrieved 2017-09-30.
3. Normandin, George P. "Galaxies IC 3528 and NGC 4540, Supernova 2001z". www.kopernik.org. Retrieved 2018-01-05.
4. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-01-05.
5. "Revised NGC Data for NGC 4540". spider.seds.org. Retrieved 2018-01-05.
6. "New General Catalog Objects: NGC 4500 - 4549". cseligman.com. Retrieved 2018-01-05.
7. "The Virgo Cluster". www.atlasoftheuniverse.com. Retrieved 2018-01-05.
8. "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2018-01-05.

External links

• 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