NGC 2931
| Galaxy NGC 2931 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | lion |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 09 h 37 m 37.6 s |
| declination | + 23 ° 14 ′ 27 ″ |
| Appearance | |
| Morphological type | S? / HII |
| Brightness (visual) | 14.2 mag |
| Brightness (B-band) | 15.1 mag |
| Angular expansion | 0.8 '× 0.6' |
| Position angle | 69 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 227-003 |
| Redshift | 0.025008 ± 0.000108 |
| Radial velocity | 7497 ± 32 km / s |
|
Stroke distance v rad / H 0 |
(332 ± 23) x 10 6 ly (101.7 ± 7.1) Mpc |
| history | |
| discovery | Heinrich d'Arrest |
| Discovery date | February 21, 1863 |
| Catalog names | |
| NGC 2931 • PGC 27415 • CGCG 122-036 • MCG + 04-23-019 • IRAS F09347 + 2328 • 2MASX J09373771 + 2314270 • GALEX ASC J093737.71 + 231427.7 • HOLM 134C • LDCE 0661 NED003 | |
NGC 2931 is a galaxy with extensive star formation regions of the Hubble type S? in the constellation Leo on the ecliptic . It is estimated to be 332 million light years away from the Milky Way and has a diameter of around 80,000 ly. Together with NGC 2929 and NGC 2930 , it forms the gravitationally bound galaxy trio Holm 134 .
The object was discovered by Heinrich d'Arrest on February 21, 1863 .
Web links
Commons : NGC 2931 - collection of images, videos, and audio files
