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- Messier_10 abstract "Messier 10 or M10 (also designated NGC 6254) is a globular cluster of stars in the equatorial constellation of Ophiuchus. The object was discovered by the French astronomer Charles Messier on May 29, 1764, who cataloged it as number 10 in his catalogue and described it as a "nebula without stars". In 1774, German astronomer Johann Elert Bode likewise called it a "nebulous patch without stars; very pale". Using larger instrumentation, German-born astronomer William Herschel was able to resolve the cluster into its individual members. He described it as a "beautiful cluster of extremely compressed stars". William Parsons, 3rd Earl of Rosse thought he could distinguish a dark lane through part of the cluster. The first to estimate the distance to the cluster was Harlow Shapley, although his derivation of 33,000 light years was much further than the modern value.The tidal radius of M10 is 19.3 arcminutes, which is about two-thirds of the apparent diameter of the Moon. Viewed through medium-sized telescopes it appears about half that size (8–9 arcminutes), as its bright core is only 35 light-years across. It has a core radius of 48 arcseconds and a half-mass radius of 147 arcseconds (2.5 arcminutes). M10 has a spatial diameter of 83 light-years and is estimated to be 14,300 light-years away from Earth.In terms of the abundance of elements other than hydrogen and helium, what astronomers term the metallicity, Messier 10 is "moderately metal–poor". The abundance of iron, measured as [Fe/H] equals –1.45 ± 0.04 dex, is only 3.5% of the abundance found at the surface of the Sun. The cluster shows evidence of being enriched by the elements generated through the s-process in massive stars and Type II supernovae. It shows little evidence of enrichment by Type 1a supernovae.Because binary stars are, on average, more massive than normal stars, the binaries tend to migrate toward the center of the cluster. The fraction of binary stars in the core region is about 14%. This proportion decreases with increasing radius to about 1.5% in the outlying regions of the cluster. Correspondingly, the core region contains a concentration of interaction-formed blue straggler stars, most of which formed 2–5 billion years ago. The density of stars in the core region is about 3.8 solar masses per cubic parsec. Four variable stars have been discovered in this cluster.The cluster is currently located about 5 kiloparsecs (16 kly) from the Galactic Center. It completes an orbit around the Milky Way galaxy about every 140 million years, during which it crosses the plane of the galactic disk every 53 million years. Its rosette orbit has an eccentricity of 0.21.".
- Messier_10 thumbnail Messier_10_Hubble_WikiSky.jpg?width=300.
- Messier_10 wikiPageExternalLink cluster_4.php?ggc=M+10.
- Messier_10 wikiPageExternalLink m010.html.
- Messier_10 wikiPageID "943639".
- Messier_10 wikiPageRevisionID "602279434".
- Messier_10 age "11.39".
- Messier_10 appmagV "6.4".
- Messier_10 caption "The core region of Messier 10 by Hubble Space Telescope; 3.5′ view".
- Messier_10 class "VII".
- Messier_10 constellation Ophiuchus.
- Messier_10 credit NASA.
- Messier_10 credit SKY-MAP.ORG.
- Messier_10 credit Space_Telescope_Science_Institute.
- Messier_10 epoch Epoch_(astronomy).
- Messier_10 hasPhotoCollection Messier_10.
- Messier_10 metalFe "–1.25".
- Messier_10 name "Messier 10".
- Messier_10 names "GCl-49, NGC 6254".
- Messier_10 radiusLy "41.6".
- Messier_10 sizeV "20".
- Messier_10 subject Category:Globular_clusters.
- Messier_10 subject Category:Messier_objects.
- Messier_10 subject Category:NGC_objects.
- Messier_10 subject Category:Objects_within_100_kly_of_Earth.
- Messier_10 subject Category:Ophiuchus_(constellation).
- Messier_10 comment "Messier 10 or M10 (also designated NGC 6254) is a globular cluster of stars in the equatorial constellation of Ophiuchus. The object was discovered by the French astronomer Charles Messier on May 29, 1764, who cataloged it as number 10 in his catalogue and described it as a "nebula without stars". In 1774, German astronomer Johann Elert Bode likewise called it a "nebulous patch without stars; very pale".".
- Messier_10 label "Cúmulo globular M10".
- Messier_10 label "M 10 (шаровое скопление)".
- Messier_10 label "M10 (amas globulaire)".
- Messier_10 label "M10 (astronomia)".
- Messier_10 label "M10 (天体)".
- Messier_10 label "M10 (球狀星團)".
- Messier_10 label "Messier 10".
- Messier_10 label "Messier 10".
- Messier_10 label "Messier 10".
- Messier_10 label "Messier 10".
- Messier_10 label "Messier 10".
- Messier_10 label "مسييه 10".
- Messier_10 sameAs Messier_10.
- Messier_10 sameAs Messier_10.
- Messier_10 sameAs Μεσιέ_10.
- Messier_10 sameAs Cúmulo_globular_M10.
- Messier_10 sameAs M10_(amas_globulaire).
- Messier_10 sameAs Messier_10.
- Messier_10 sameAs M10_(astronomia).
- Messier_10 sameAs M10_(天体).
- Messier_10 sameAs 메시에_10.
- Messier_10 sameAs Messier_10.
- Messier_10 sameAs Messier_10.
- Messier_10 sameAs Messier_10.
- Messier_10 sameAs m.03s1g3.
- Messier_10 sameAs Q11267.
- Messier_10 sameAs Q11267.
- Messier_10 wasDerivedFrom Messier_10?oldid=602279434.
- Messier_10 depiction Messier_10_Hubble_WikiSky.jpg.
- Messier_10 isPrimaryTopicOf Messier_10.
