NGC 2158 | |
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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 | |
Radius | 8 ly |
Estimated age | ~2 billion yrs [2] |
Associations | |
Constellation | Gemini |
NGC 2158 is an open cluster in the constellation of Gemini. It is, in angle, immediately southwest of open cluster Messier 35, and is believed to be about 2 billion years old. [2] The two clusters are unrelated, as the subject is around 9,000 light years further away.
Once thought to be a globular cluster, it is now known to be an intermediate-age, metal-poor open cluster that is a member of the old thin disk population. [2]
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 | |
Radius | 8 ly |
Estimated age | ~2 billion yrs [2] |
Associations | |
Constellation | Gemini |
NGC 2158 is an open cluster in the constellation of Gemini. It is, in angle, immediately southwest of open cluster Messier 35, and is believed to be about 2 billion years old. [2] The two clusters are unrelated, as the subject is around 9,000 light years further away.
Once thought to be a globular cluster, it is now known to be an intermediate-age, metal-poor open cluster that is a member of the old thin disk population. [2]