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Rho Aurigae
Rho Aurigae (ρ Aur, ρ Aurigae) is the Bayer designation for a binary star system in the northern constellation of Auriga. It is faintly visible to the naked eye with an apparent visual magnitude of +5.22.〔 Judging by parallax measurements, this system is approximately distant from the Earth, give or take a 30 light-year margin of error.〔
This is a single-lined spectroscopic binary system wherein the presence of a companion object is revealed by shifts in the stellar spectrum. The pair orbit each other with a period of 34.49 days and an eccentricity of 0.10.〔 The primary component of this system is a B-type main sequence star with a stellar classification of B3 V.〔 The secondary may be a B- or A-type star.〔
==Name==
This star, along with λ Aur and μ Aur, were Kazwini's Al Ḣibāʽ (ألحباع), the Tent.〔 According to the catalogue of stars in the ''Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars'', ''Al Ḣibāʽ'' were the title for three stars : λ Aur as ''Al Ḣibāʽ I'', μ Aur as ''Al Ḣibāʽ II'' and ρ Aur as ''Al Ḣibāʽ III''.〔
In Chinese, (), meaning ''Pool of Harmony'', refers to an asterism consisting of ρ Aurigae, λ Aurigae and HD 36041.〔 ''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, ρ Aurigae itself is known as (, (英語:the First Star of Pool of Harmony).)〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 13 日 )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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