NGC 559
Template:Short description Template:Infobox Cluster NGC 559 (also known as Caldwell 8) is an open cluster and Caldwell object in the constellation Cassiopeia. It shines at magnitude +9.5. Its celestial coordinates are RA Template:RA, dec Template:DEC. It is located near the open cluster NGC 637, and the bright magnitude +2.2 irregular variable star Gamma Cassiopeiae. The cluster is 7 arcmins across.[1]
The object is also called Ghost's Goblet. This name was coined by astronomer Stephen J. O'Meara, as the center of the star cluster, with a little imagination, is reminiscent of a still photograph of a jeweled goblet that is about to vanish in a ghostly manner. O'Meara attributes the impression of fading to the low brightness (about +12) of many stars in the center as well as to the great age of the star cluster, which is about 1.8 billion years old.[2]
References
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- ↑ O’Meara, Stephen James (2016): The Caldwell Objects. 2nd edition, Cambridge, Cambridge University Press, ISBN 978-1-107-08397-4, p. 49–51.
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External links
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