Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  B287  ·  M 7  ·  NGC 6453  ·  NGC 6475  ·  PK355-04.1  ·  PK355-04.2  ·  PK356-04.1  ·  Ptolemy cluster  ·  Ptolemy's Cluster
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M 7, Alan Karty
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M 7

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M 7, Alan Karty
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M 7

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Description

Messier 7 or M7, also designated NGC 6475 and sometimes known as the Ptolemy Cluster, is an open cluster of stars in the constellation of Scorpius. The cluster is easily detectable with the naked eye, close to the "stinger" of Scorpius. With a declination of −34.8°, it is the southernmost Messier object.

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M 7, Alan Karty