= Collinder 228
{wiki=Collinder_228}
Collinder 228 is an open star cluster located in the constellation of Cassiopeia. It was cataloged by the Swedish astronomer Per Collinder in 1931 as part of his investigation of open clusters. Open clusters are groups of stars that are gravitationally bound and formed from the same molecular cloud, typically containing a few dozen to a few thousand stars. Collinder 228 is relatively young and is notable for its stars being relatively hot and bright.
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