NGC 2639
| Galaxy NGC 2639 |
|
|---|---|
|
|
| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 08 h 43 m 37.8 s |
| declination | + 50 ° 12 ′ 22 ″ |
| Appearance | |
| Morphological type | (R) SA (r) a :? / Sy2 / LINER |
| Brightness (visual) | 11.7 mag |
| Brightness (B-band) | 12.6 mag |
| Angular expansion | 1.8 ′ × 1.1 ′ |
| Position angle | 140 ° |
| Surface brightness | 12.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.011128 ± 0.000037 |
| Radial velocity | 3336 ± 11 km / s |
|
Stroke distance v rad / H 0 |
(150 ± 10) x 10 6 ly (46.1 ± 3.2) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | March 9, 1788 |
| Catalog names | |
| NGC 2639 • UGC 4544 • PGC 24506 • 24507 • CGCG 237-014 • MCG + 08-16-024 • IRAS 08400 + 5023 • 2MASX J0843380 + 501220 • GC 1684 • H I 204 • h 518 • GALEX ASC J084338.12 + 501220.2 • LDCE 588 NED002 | |
NGC 2639 is a spiral galaxy with an active nucleus of the Hubble type Sa in the constellation Great Bear in the northern sky . It is estimated to be 150 million light years from the Milky Way and about 80,000 light years in diameter .
The object was discovered in 1788 by the astronomer Wilhelm Herschel with a 48 cm telescope.
Web links
Commons : NGC 2639 - collection of images, videos, and audio files
