Astronomy:NGC 5921
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Short description: Galaxy in the constellation Serpens
| NGC 5921 | |
|---|---|
 NGC 5921 as taken at the Mount Lemmon SkyCenter | |
| Observation data (J2000 epoch) | |
| Constellation | Serpens Caput |
| Right ascension | 15h 21m 56.5s[1] |
| Declination | +05° 04′ 14″[1] |
| Redshift | 0.00470 ± 0.00001[2] |
| Helio radial velocity | 1480 ± 1 km/s[1] |
| Distance | 65 Mly[3] |
| Apparent magnitude (V) | 11.5[1] |
| Characteristics | |
| Type | SB(r)bc[1] |
| Apparent size (V) | 4.9′ × 4.0′[1] |
| Other designations | |
| UGC 9824,[1] PGC 54849[1] | |
NGC 5921 is a barred spiral galaxy located approximately 65 million light-years from the Solar System in the constellation Serpens Caput. It was discovered by William Herschel on 1 May 1786.[4] In February 2001 a type II supernova (SN 2001X) was discovered in NGC 5921.[5] It is a member of the Virgo III Groups, a series of galaxies and galaxy clusters strung out to the east of the Virgo Supercluster of galaxies.[6]
Hubble Space Telescope image of NGC 5921's center
See also
- Spiral Galaxy NGC 1300
- List of NGC objects (5001–6000)
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "NASA/IPAC Extragalactic Database". Results for NGC 5921. http://nedwww.ipac.caltech.edu/.
- ↑ "NGC 5921". http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+5921.
- ↑ An object's distance from Earth can be determined using Hubble's law: v=Ho is Hubble's constant (70±5 (km/s)/Mpc). The relative uncertainty Δd/d divided by the distance is equal to the sum of the relative uncertainties of the velocity and v=Ho
- ↑ "New General Catalog Objects: NGC 5900 - 5949" (in en-US). http://cseligman.com/text/atlas/ngc59.htm#5921.
- ↑ "Bright Supernovae - 2001". http://www.rochesterastronomy.org/sn2001/index.html#2001X.
- ↑ "The Virgo III Groups". Atlas of the Universe. http://www.atlasoftheuniverse.com/galgrps/viriii.html.
External links
- NGC 5921 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SEDS
- NOAO: NGC 5921
Coordinates: 
15h 21m 56.5s, +05° 04′ 14″
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