NGC 2808
|
Globular cluster NGC 2808 |
|
|---|---|
|
|
| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Keel of the ship |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 09 h 12 m 02.5 s |
| declination | -64 ° 51 ′ 46 ″ |
| Appearance | |
| Concentration class | I. |
| Brightness (visual) | 6.9 likes |
| Angular expansion | 13 ′, 8 |
| Physical data | |
| Affiliation | Milky Way |
| Redshift | +0.000333 ± 0.000010 |
| Radial velocity | (+99.7 ± 2.9) km / s |
| distance | approx. 30,000 ly |
| Age | 12.5 billion years |
| history | |
| discovery | James Dunlop |
| Discovery date | May 7, 1826 |
| Catalog names | |
| NGC 2808 • C 0911-646 • GCl 13 • ESO 91-SC1 • Dun 265 • GC 1793 • h 3152 | |
NGC 2808 is the name of a globular cluster in the constellation Carina . NGC 2808 has an apparent magnitude of 6.9 mag and a diameter of 13.8 arc minutes . This cluster is one of the few globular clusters in the winter sky, but is only visible from very southern latitudes. The location of this globular cluster in the winter sky was made even more explosive by the discovery of the Canis Major dwarf galaxy in 2003 . Just like Messier 79 and NGC 1851 , this star cluster does not seem to lie in this region of the sky by chance, which is otherwise poor in such objects, because it does not seem to have its origin in the Milky Way system, but was captured together with that dwarf galaxy.
The object was discovered on May 7, 1826 by the Scottish astronomer James Dunlop .
See also
Web links
- Hubble Space Telescope
- Triple baby boom in the globular cluster
- Antilhue Chile
- Spektrum.de : Amateur recordings [1]