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Categories: Messier objects | NGC objects | Open clusters | Scorpius constellation

Ptolemy Cluster

(Redirected from Open Cluster M7)

The Ptolemy Cluster (also known as Ptolemy's Cluster, the Scorpion's Tail, Open Cluster M7, Messier Object 7, Messier 7, M7, or NGC 6475) is an open cluster in the Scorpius constellation. It was known to Ptolemy by 130 AD. M7 is a large and brilliant group, easily detected with the naked eye.

External links

Messier 7, SEDS Messier pages

Categories: Messier objects | NGC objects | Open clusters | Scorpius constellation

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07-14-2008 23:18:10
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