Celestial hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  NGC 2158
NGC2158, AlBroxton
NGC2158
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NGC2158

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Description

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 just over 1 billion years old. The mass of M35 has been computed using a statistical technique based on proper motion velocities of its stars. The mass within the central 3.75 parsecs was found to be between 1600 and 3200 solar masses (95 percent confidence), consistent with the mass of a realistic stellar population within the same radius. Discovered by William Herschel in 1784.

Observation Notes : Pretty bright, pretty small, very compressed, arrowhead shape. I counted 12 stars and saw a very grainy background at 165X on a night I rated 7/10.

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  • NGC2158, AlBroxton
    Original
  • Final
    NGC2158, AlBroxton
    B

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NGC2158, AlBroxton