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NGC 6031 is an open cluster of stars in the constellation Norma. It has a Trumpler classification of II 2p〔 and an age of about . The abundance of iron in this cluster matches the abundance in the Sun, indicating that the metallicity of the cluster is essentially solar.〔 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「NGC 6031」の詳細全文を読む スポンサード リンク
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