TOA-150, ST11K
L 36 Min, R, G, B 45 Min each
[LRGB]RGB
The Double Cluster in Perseus, NGC 869 and 884
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Catalogued by Hipparchus in 130 BC

The two clusters are about 7,000-7,500 Ly distant and a few hundred light years apart. They are of the same age and likely represent a single
cluster which is breaking up.