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Xi Cephei (ξ Cep, ξ Cephei) is a star in the constellation Cepheus. It has the traditional name Kurhah or Alkirdah or Al Kirduh,〔(''Islamic Crescent Project:'' Star names )〕 the name coming from Qazvini who gave Al Ḳurḥaḥ (القرحة - ''al-qurhah''), an Arabic word Ideler translated as a white spot, or blaze, in the face of a horse. Allen indicates that Ideler felt this was not a proper name for a star, and suggested the name Al Ḳirdah (ألقردة - ''al qírada''), the Ape. Xi Cephei belongs to spectral class A3/6Vm and has apparent magnitude +4.29. It is approximately 86 light years from Earth.〔 Coordinates (equinox J2000.0): * Right ascension: 22h03m47.40s * Declination: +64°37'40.0" It is a spectroscopic binary. In Chinese, (), meaning ''Celestial Hook'', refers to an asterism consisting of ξ Cephei, 4 Cephei, HD 194298, η Cephei, θ Cephei, α Cephei, 26 Cephei, ι Cephei and ο Cephei.〔 ''中國星座神話'', written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.〕 Consequently, ξ Cephei itself is known as (, (英語:the Sixth Star of Celestial Hook).).〔 (香港太空館 - 研究資源 - 亮星中英對照表 ), Hong Kong Space Museum. Accessed on line November 23, 2010.〕 ==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「Xi Cephei」の詳細全文を読む スポンサード リンク
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