NGC 2831
| Galaxy NGC 2831 |
|
|---|---|
|
|
| Arp 315, from left to right: NGC 2832, NGC2831 and NGC 2830, SDSS | |
| AladinLite | |
| Constellation | lynx |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 09 h 19 m 45.5 s |
| declination | + 33 ° 44 ′ 42 ″ |
| Appearance | |
| Morphological type | E0 |
| Brightness (visual) | 13.4 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 0.5 ′ × 0.5 ′ |
| Surface brightness | 11.9 mag / arcmin² |
| Physical data | |
| Affiliation | Abell 779 |
| Redshift | 0.017279 +/- 0.000025 |
| Radial velocity | 5180 +/- 7 km / s |
|
Stroke distance v rad / H 0 |
(230 ± 16) x 10 6 ly (70.5 ± 4.9) Mpc |
| history | |
| discovery | George Stoney |
| Discovery date | March 13, 1850 |
| Catalog names | |
| NGC 2831 • UGC 4942 NOTES01 • PGC 26376 • CGCG 181-024 NED01 • MCG + 06-21-013 • 2MASX J09194548 + 3344420 • Arp 315 • HOLM 123C | |
NGC 2831 is an elliptical galaxy with an active nucleus of the Hubble type E2 in the constellation Lynx in the northern sky . It is an estimated 230 million light years away from the Milky Way and has a diameter of about 35,000 ly. Together with NGC 2830 and NGC 2832 , it forms the galaxy trio Arp 315 . Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy triplet belongs to the class of galaxy groups .
The object was discovered on March 13, 1850 by George Johnstone Stoney .
Web links
Commons : NGC 2831 - collection of images, videos, and audio files
literature
- Jeff Kanipe and Dennis Webb: The Arp Atlas of Peculiar Galaxies - A Chronicle and Observer's Guide " , Richmond 2006, ISBN 978-0-943396-76-7