Ursa Major II Dwarf
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| Ursa Major II Dwarf | |
| Observation data (J2000 epoch) | |
|---|---|
| Constellation | Ursa Major |
| Right ascension | 08h 51m 30.0s[1] |
| Declination | +63° 07′ 48″[1] |
| Distance | 98 kly (30 kpc)[citation needed] |
| Type | dSph-Irr? |
| Apparent magnitude (V) | 14.3 |
| Other designations | |
| UMa II dwarf,[1] Ursa Major II dSph[1] | |
| See also: Galaxy, List of galaxies | |
Ursa Major II Dwarf is a dwarf galaxy orbiting the Milky Way galaxy. The discovery by D. B. Zucker et al. was announced in 2006.
It is a small dwarf galaxy with projected size of 250
125 pc. The absolute magnitude of the object is only -3.8, meaning that it is less luminous than some stars, like Canopus in the Milky Way. It is comparable in luminosity to Bellatrix in Orion.
It is located at a distance of about 97,800 light-years from the Earth. There is another object called Ursa Major I Dwarf, discovered by Beth Willman in 2005.
[edit] References
- Zucker, D. B.; Belokurov, V.; Evans, N. W.; Kleyna, J. T.; Irwin, M. J.; Wilkinson, M. I.; Fellhauer, M.; Bramich, D. M.; Gilmore, G.; Newberg, H. J.; Yanny, B.; Smith, J. A.; Hewett, P. C.; Bell, E. F.; Rix, H.-W.; Gnedin, O. Y.; Vidrih, S.; Wyse, R. F. G.; Willman, B.; Grebel, E. K.; Schneider, D. P.; Beers, T. C.; Kniazev, A. Y.; Barentine, J. C.; Brewington, H.; Brinkmann, J.; Harvanek, M.; Kleinman, S. J.; Krzesinski, J.; Long, D.; Nitta, A.; Snedden, S. A. 2006, The Astrophysical Journal, 650, L41-L44 (ADS entry [1])
[edit] See also
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