Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  M 103  ·  NGC 581
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Messier 103, Mike Freeberg
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Messier 103

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Messier 103, Mike Freeberg
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Messier 103

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Description

Messier 103 is a open cluster  in Cassiopeia.  It is one of the more distant star clusters at around 8000-9500 light yrs. from our solar system. The star cluster is estimated to be about 25 million yrs old.  Discovered in 1781 by Charles Messier.

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