NGC 6531: Difference between revisions

Latest revision as of 09:43, 5 January 2008

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NGC 6531, also known as M 21, is an open cluster located in the constellation Sagittarius.

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 {{subpages}}
-'''NGC 6531'''<ref>Hirshfeld, Alan, and Roger W. Sinnott, eds., Sky Catalogue 2000.0, Vol.2, Cambridge, Massachusetts: Sky Publishing Corp. and Cambridge University Press, 1985. (3098,238)</ref><ref>NGC 2000.0, The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J.L.E. Dreyer Sinnott, R.W. (edited by) <Sky Publishing Corporation and Cambridge University Press (1988)></ref>, also known as '''M 21''', is an [[open cluster]] located in the constellation [[Sagittarius]].
+'''NGC 6531''', also known as '''M 21''', is an [[open cluster]] located in the constellation [[Sagittarius]].
 {{Infobox NGCobject
 | number= NGC 6531
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 | type = [[Open cluster]]
 | epoch = 2000.0
-| ra = 18<sup>h</sup>04.6<sup>m</sup>
+| ra =
-| de = -22<sup>o</sup>30<sup>'</sup>
+| de =
-| app_size =  13.0
+| app_size =
-| app_mag =   5.9
+| app_mag =
 | distance_ly =
 | const = Sagittarius
@@ Line 15: / Line 15: @@
 | redshift =
 | other =  M 21
-| source = Hirshfeld, Alan, and Roger W. Sinnott, eds., Sky Catalogue 2000.0, Vol.2, Cambridge, Massachusetts: Sky Publishing Corp. and Cambridge University Press, 1985. (3098,238)
+| source =
-| org_source = NGC 2000.0, The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J.L.E. Dreyer Sinnott, R.W. (edited by) <Sky Publishing Corporation and Cambridge University Press (1988)>
+| org_source =
 }}
 === Appearance ===