Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  M 103  ·  NGC 581
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M103, Gary Imm
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M103

Getting plate-solving status, please wait...
M103, Gary Imm
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M103

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Description

This object is an open star cluster almost 10,000 light years away in the northern constellation of Cassiopeia. Almost 200 stars comprise this cluster, which is about 20 light years in diameter. Bright blue stars highlight this open cluster, with a few red stars including the one red giant towards the center. Of all of the Messier open star clusters, M103 is one of the smallest, youngest and most remote.

This image of M103 is a crop of a larger image of the M103 region, seen here:

M103, NGC 654, NGC 659, NGC 663, and IC 166


Please see the above link for image acquisition details and a description of the object.

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M103, Gary Imm

In these public groups

Cloudy Nights

In these collections

Messier Catalog (Complete)