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NGC 4697
NGC 4697 (also known as Caldwell 52) is an elliptical galaxy some 40 to 50 million light-years away in the constellation Virgo. It is a member of the NGC 4697 Group, a group of galaxies also containing NGC 4731 and several generally much smaller galaxies 〔(【引用サイトリンク】 work=Atlas of the Universe )〕 This group is about 55 million light-years away; it is one of the many Virgo II Groups, which form a southern extension of the Virgo Supercluster of galaxies.〔 The distance to NGC 4697 is not known with high precision: measurements vary from 28 to 76 million light-years.〔 According to the NASA Extra-galactic Database, the average is about 38 million light-years;〔 according to SIMBAD, about 50 million light-years.〔 ==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 4697」の詳細全文を読む
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