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Sagittarius Star Cloud

Messier 73

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m73,m73 asterism

Messier 73 (M73) is an asterism formed by four physically unrelated stars located in the southern constellation Aquarius. The asterism has an apparent magnitude of 9 and lies at an approximate distance of 2,500 light years from Earth. It has the designation NGC 6994 in the New General Catalogue.
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Messier 40: Winnecke 4

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m40,wnc 4,winnecke 4

Messier 40 (M40), also known as Winnecke 4 (WNC 4), is a double star located in the constellation Ursa Major, the Great Bear. M40 lies at a distance of 510 light years from Earth. It is one of the few Messier objects that are not deep sky objects, but were catalogued by mistake. It was not listed in the New General Catalogue (NGC).
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Messier 25

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m25,ic 4725

Messier 25 (M25) is a bright, prominent open cluster located in Sagittarius constellation. The cluster lies at a distance of 2,000 light years from Earth and has an apparent magnitude of 4.6. Its designation in the Index Catalogue is IC 4725.
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Messier 18

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m18,ngc 6613,open cluster

Messier 18 (M18) is a relatively dim open star cluster located in the constellation Sagittarius. The cluster lies at an approximate distance of 4,900 light years, or 1,500 parsecs, from Earth and has an apparent magnitude of 7.5. Its designation in the New General Catalogue is NGC 6613.
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