NGC 3631
| Galaxy NGC 3631 |
|
|---|---|
|
|
| NGC 3631 Hubble Space Telescope | |
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 21 m 02.874 s |
| declination | + 53 ° 10 ′ 10.45 ″ |
| Appearance | |
| Morphological type | SA (s) c |
| Brightness (visual) | 10.1 mag |
| Brightness (B-band) | 10.8 mag |
| Angular expansion | 5 ′ × 3.7 ′ |
| Position angle | 114 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 3631 group LGG 241 |
| Redshift | 0.003856 ± 0.000003 |
| Radial velocity | (1156 ± 1) km / s |
|
Stroke distance v rad / H 0 |
(54 ± 4) · 10 6 ly (16.7 ± 1.2) Mpc |
| diameter | 80,000 ly |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 14, 1789 |
| Catalog names | |
| NGC 3631 • UGC 6360 • PGC 34767 • CGCG 268-021 • MCG + 09-19-047 • IRAS 11181 + 5326 • Arp 27 • VV 363 • GC 2379 • H I 226 • h 858 • | |
NGC 3631 = Arp 27 is a spiral galaxy of the Hubble type Sc in the constellation Great Bear in the northern sky . It is about 54 million light years away from the Milky Way and about 80,000 light years in diameter . The galaxy is the brightest member of the NGC 3631 group ( LGG 241 ).
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with a pronounced arm (Arp catalog) .
The supernovae SN 1964A (Type-IIP), SN 1965L (Type IIP) and SN 1996bu (Type-IIn) were observed here.
The object was discovered by Wilhelm Herschel on April 14, 1789 .
NGC 3631 group ( LGG 241 )
| Galaxy | Alternative name | Distance / million ly |
|---|---|---|
| NGC 3631 | PGC 34767 | 54 |
| NGC 3657 | PGC 35002 | 57 |
| NGC 3718 | PGC 35616 | 47 |
| NGC 3729 | PGC 35711 | 50 |
| NGC 3913 | PGC 37024 | 46 |
| NGC 3972 | PGC 37466 | 42 |
| NGC 3998 | PGC 37642 | 51 |
| PGC 34170 | UGC 6251 | 44 |
| PGC 35202 | UGC 6446 | 32 |
| PGC 37037 | UGC 6816 | 43 |
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
Web links
Commons : NGC 3631 - collection of images, videos, and audio files
