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Pi Arae
Pi Arae (π Ara, π Arae) is the Bayer designation for a star in the southern constellation of Ara. It is approximately from Earth〔 and has an apparent visual magnitude of +5.25〔 The stellar classification of this star is A5 IV-V,〔 with the spectrum showing features of both a main sequence and a subgiant star. Pi Arae is roughly 170 million years old. It displays an excess emission of infrared radiation, which may be explained by a circumstellar disk of dust.〔 ==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「Pi Arae」の詳細全文を読む
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