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Iota Sagittarii : ウィキペディア英語版 | Iota Sagittarii
Iota Sagittarii (Iota Sgr, ι Sagittarii, ι Sgr) is a star in the constellation Sagittarius. Iota Sagittarii is a spectral type K0 giant and has an apparent magnitude of +4.12. It is 189 light years from Earth. It is moving through the Galaxy at a speed of 39.3 km/s relative to the Sun. Its projected Galactic orbit carries it between 22,500 and 50,100 light years from the center of the Galaxy.〔(Iota Sagittarii (HIP 98032) )〕 It came closest to the Sun 1.3 million years ago when it had brightened to magnitude 2.21 from a distance of 75 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「Iota Sagittarii」の詳細全文を読む
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