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HD 221525 is a subgiant star near the north celestial pole in the constellation Cepheus.〔 At an apparent magnitude of 5.6, so that it can be seen with the naked eye under dark skies.〔 It is about 30 times fainter than the star Polaris.〔 == Notes == 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「HD 221525」の詳細全文を読む スポンサード リンク
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