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Alpha Sextantis : ウィキペディア英語版 | Alpha Sextantis
Alpha Sextantis (α Sex, α Sextantis) is the brightest star in the constellation Sextans.〔(The Internet Encyclopedia of Science ) Retrieved 24 May, 2009〕 It is a white A-type giant with an apparent magnitude of +4.48. It is approximately 287 light years from Earth. Alpha Sextantis is considered an informal "equator star", as it lies less than a quarter of a degree south of the celestial equator. In 1900, it was 7 minutes of arc north of the equator. As a result of movement of the Earth's axial tilt, it crossed over to the Southern Hemisphere in December 1923.〔(Department of Astronomy, University of Illinois ) Retrieved 24 May, 2009〕 ==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「Alpha Sextantis」の詳細全文を読む
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