NGC 4931
| Galaxy NGC 4931 |
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|---|---|
![NGC 4931 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC4931_-_SDSS_DR14.jpg)
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| NGC 4931 SDSS image | |
| AladinLite | |
| Constellation | Berenike's hair |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 13 h 03 m 00.875 s |
| declination | + 28 ° 01 ′ 56.95 ″ |
| Appearance | |
| Morphological type | SA0 |
| Brightness (visual) | 13.4 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.6 ′ × 0.6 ′ |
| Position angle | 78 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | Coma galaxy cluster Abell 1656 WBL 426 |
| Redshift | 0.018156 ± 0.000022 |
| Radial velocity | 5443 ± 7 km / s |
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Stroke distance v rad / H 0 |
(244 ± 17) x 10 6 ly (74.8 ± 5.2) Mpc |
| history | |
| discovery | Heinrich d'Arrest |
| Discovery date | May 10, 1863 |
| Catalog names | |
| NGC 4931 • UGC 8154 • PGC 45055 • CGCG 160-118 • MCG + 05-31-114 • 2MASX J13030089 + 2801573 • GC 5712 • GALEX ASC J130300.92 + 280157.0 • LDCE 926 NED070 • NSA 104257 • WISEA J130300.89 + 280156.8 | |
NGC 4931 is a 13.4 mag bright lens-shaped galaxy of the Hubble-type S0 in the constellation Haar der Berenike in the northern sky . It is an estimated 244 million light years from the Milky Way and about 115,000 light years in diameter. The galaxy is considered a member of the Coma galaxy cluster Abell 1656 .
In the same area of the sky are u. a. the galaxies NGC 4929 , NGC 4934 , IC 4106 , IC 4111 .
The object was discovered on May 10, 1863 by Heinrich Louis d'Arrest .
Web links
- NGC 4931. SIMBAD , accessed February 22, 2015 .
- NGC 4931. DSO Browser, accessed February 22, 2015 .
- Auke Slotegraaf : NGC 4931. Deep Sky Observer's Companion, accessed on February 22, 2015 .