NGC 2158
NGC 2158 | |
---|---|
| |
Observation data (J2000 epoch) | |
Constellation | Gemini |
Right ascension | 06h 07m 25s[1] |
Declination | +24° 05.8′[1] |
Distance | 11,000+ ly[2] |
Apparent magnitude (V) | 8.6[1] |
Apparent dimensions (V) | 5 arcmin[2] |
Physical characteristics | |
Estimated age | ~2 billion yrs[2] |
NGC 2158 is an open cluster in the constellation of Gemini. It is located southwest of open cluster Messier 35, and is believed to be about 2 billion years old.[2] The two clusters are unrelated, as NGC 2158 is around 9,000 light years further away than M35.
Once thought to be a globular cluster, NGC 2158 is now known to be an intermediate-age, metal-poor open cluster that is a member of the old thin disk population.[2]
References
- 1 2 3 "SIMBAD Astronomical Database". Results for NGC 2158. Retrieved 2010-08-31.
- 1 2 3 4 5 Carraro, Giovanni; Girardi, Leo; Marigo, Paola. "The intermediate-age open cluster NGC 2158". arXiv.org. Cornell University Library. doi:10.1046/j.1365-8711.2002.05326.x. Retrieved 9 July 2015.
External links
- NGC 2158 (SEDS)
- NGC 2158 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
This article is issued from Wikipedia - version of the 7/9/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.