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- Messier_72 abstract "Messier 72 (also known as M72 or NGC 6981) is a globular cluster in the Aquarius constellation discovered by French astronomer Pierre Méchain on August 29, 1780. French astronomer Charles Messier looked for it on the following October 4, and included it in his catalog. Both decided that it was a faint nebula rather than a cluster. With a larger instrument, British astronomer John Herschel called it a bright "cluster of stars of a round figure". American astronomer Harlow Shapley noted a similarity to Messier 4 and Messier 12.This cluster is visible as a faint nebula in a telescope with a 6 cm (2.4 in) aperture. the surrounding field stars become visible at 15 cm (5.9 in), while 25 cm (9.8 in) is sufficient to resolve the cluster with an angular diameter of 2.5′. At 30 cm (12 in) the core is resolved in a 1.25′ diameter, showing a broad spread with darker regions to the south and east.Based upon a 2011 census of variable stars, Messier 72 is located at a distance of 54.57 ± 1.17 kly (16.73 ± 0.36 kpc) from the Sun. It has an estimated combined mass equal to 168,000 times the mass of the Sun and is around 9.5 billion years old. The core region has a density of stars that is radiating 2.26 times the luminosity of the Sun per cubic parsec. There are 43 identified variable stars in the cluster.".
- Messier_72 thumbnail M72_Hubble_WikiSky.jpg?width=300.
- Messier_72 wikiPageExternalLink cluster_4.php?ggc=M+72.
- Messier_72 wikiPageExternalLink m72.htm.
- Messier_72 wikiPageExternalLink Astro-DSO-NGC-6838.htm.
- Messier_72 wikiPageExternalLink m072.html.
- Messier_72 wikiPageID "936346".
- Messier_72 wikiPageRevisionID "592476578".
- Messier_72 age "9.5".
- Messier_72 appmagV "9.35".
- Messier_72 caption "M72 from Hubble Space Telescope; 3.44′ view".
- Messier_72 class "IX".
- Messier_72 constellation Aquarius_(constellation).
- Messier_72 credit NASA.
- Messier_72 credit SKY-MAP.ORG.
- Messier_72 credit Space_Telescope_Science_Institute.
- Messier_72 epoch Epoch_(astronomy).
- Messier_72 hasPhotoCollection Messier_72.
- Messier_72 name "Messier 72".
- Messier_72 names "NGC 6981, GCl 118".
- Messier_72 subject Category:Aquarius_(constellation).
- Messier_72 subject Category:Globular_clusters.
- Messier_72 subject Category:Messier_objects.
- Messier_72 subject Category:NGC_objects.
- Messier_72 comment "Messier 72 (also known as M72 or NGC 6981) is a globular cluster in the Aquarius constellation discovered by French astronomer Pierre Méchain on August 29, 1780. French astronomer Charles Messier looked for it on the following October 4, and included it in his catalog. Both decided that it was a faint nebula rather than a cluster. With a larger instrument, British astronomer John Herschel called it a bright "cluster of stars of a round figure".".
- Messier_72 label "Cúmulo globular M72".
- Messier_72 label "M 72 (шаровое скопление)".
- Messier_72 label "M72 (amas globulaire)".
- Messier_72 label "M72 (astronomia)".
- Messier_72 label "M72 (天体)".
- Messier_72 label "M72 (球狀星團)".
- Messier_72 label "Messier 72".
- Messier_72 label "Messier 72".
- Messier_72 label "Messier 72".
- Messier_72 label "Messier 72".
- Messier_72 label "Messier 72".
- Messier_72 label "م72".
- Messier_72 sameAs Messier_72.
- Messier_72 sameAs Messier_72.
- Messier_72 sameAs Μεσιέ_72.
- Messier_72 sameAs Cúmulo_globular_M72.
- Messier_72 sameAs M72_(amas_globulaire).
- Messier_72 sameAs Messier_72.
- Messier_72 sameAs M72_(astronomia).
- Messier_72 sameAs M72_(天体).
- Messier_72 sameAs 메시에_72.
- Messier_72 sameAs Messier_72.
- Messier_72 sameAs Messier_72.
- Messier_72 sameAs Messier_72.
- Messier_72 sameAs m.03rjwq.
- Messier_72 sameAs Q14008.
- Messier_72 sameAs Q14008.
- Messier_72 wasDerivedFrom Messier_72?oldid=592476578.
- Messier_72 depiction M72_Hubble_WikiSky.jpg.
- Messier_72 isPrimaryTopicOf Messier_72.
