Astronomy:NGC 4540
From HandWiki
Short description: Galaxy in the constellation Coma Berenices
| 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] |
| Helio 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
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "NASA/IPAC Extragalactic Database". Results for NGC 4540. http://nedwww.ipac.caltech.edu/.
- ↑ "parsecs to lightyears conversion". http://www.unitconversion.org/length/parsecs-to-light-years-conversion.html.
- ↑ Normandin, George P.. "Galaxies IC 3528 and NGC 4540, Supernova 2001z". http://www.kopernik.org/images/archive/i3528.htm.
- ↑ "Your NED Search Results". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+4540&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ "Revised NGC Data for NGC 4540". http://spider.seds.org/ngc/revngcic.cgi?NGC4540.
- ↑ "New General Catalog Objects: NGC 4500 - 4549". https://cseligman.com/text/atlas/ngc45.htm#4540.
- ↑ "The Virgo Cluster". http://www.atlasoftheuniverse.com/galgrps/vir.html.
- ↑ "Detailed Object Classifications". http://ned.ipac.caltech.edu/cgi-bin/NEDatt?objname=NGC+4540.
External links
- NGC 4540 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
12h 34m 50.9s, 15° 33′ 06″
 |  |
