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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Zeta Draconis ： ウィキペディア英語版 Zeta Draconis Zeta Draconis (ζ Dra, ζ Draconis) is the Bayer designation for a star in the northern circumpolar constellation of Draco. It shares the Arabic name Al dhi'bah ('the hyenas') with several other stars in the constellation,〔 and shares the name Al dhibain with Eta Draconis.〔 It is known as Nodus III (Third Knot, the knot being a loop in the tail of Draco).〔 With an apparent visual magnitude of +3.17,〔 it is the fifth brightest member of this generally faint constellation. The distance to Zeta Draconis has been measured using the parallax technique, yielding an estimate of roughly away.〔 In Chinese, (), meaning ''Left Wall of Purple Forbidden Enclosure'', refers to an asterism consisting of ζ Draconis, ι Draconis, η Draconis, θ Draconis, υ Draconis, 73 Draconis, γ Cephei and 23 Cassiopeiae.〔 ''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, ζ Draconis itself is known as (, (英語:the Fourth Star of Left Wall of Purple Forbidden Enclosure).),〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 6 月 10 日 )〕 representing (), meaning ''The First Minister''.〔 (English-Chinese Glossary of Chinese Star Regions, Asterisms and Star Name ), Hong Kong Space Museum. Accessed on line November 23, 2010.〕 上弼 (Shǎngbì) is westernized into Shang Pih by R.H. Allen with meaning "the Higher Minister".〔(Star Name - R.H. Allen p. 210 )〕 Zeta Draconis is a giant star with a stellar classification of B6 III.〔 Compared to the Sun, this star is about 2.5 times larger, 3.5 times more massive, and is radiating 148 times as much luminosity.〔 This energy is being emitted from the star's outer envelope at an effective temperature of nearly 13,400 K.〔 The azimuthal rotation velocity along the equator is at least 55 km/s.〔 The north ecliptic pole is located at right ascension 18h and declination +66.5°.〔 This is located roughly mid-way between Delta Draconis and Zeta Draconis.〔 ==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「Zeta Draconis」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.