NGC 2158
| NGC 2158 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| 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] |
| Associations | |
| Constellation | Gemini |
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
- ^ a b c "SIMBAD Astronomical Database". Results for NGC 2158. Retrieved 2010-08-31.
- ^ a b c d e 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.
{{cite web}}: CS1 maint: unflagged free DOI (link)
External links
- NGC 2158 (SEDS)
- NGC 2158 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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