NGC 559

NGC 559 is an open cluster and Caldwell object in the constellation Cassiopeia. It shines at magnitude +9.5. Its celestial coordinates are RA, 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.
It was discovered by William Herschel in 1787.
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 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.