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Open Clusters
The attached file lists about 400 NGC and IC open clusters.
Those with more than 500 stars are highlighted in yellow.
Those closer than 2,000 light years are also highlighted in yellow.
The close ones usually have brighter stars.
Diameters are in arc minutes.
Object type code has the following meaning:
a = association
m = moving group
n = nebulosity/presence of nebulosity
r = remnant cluster
s = asterism
Refr Global survey of star clusters in the Milky Way
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