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Gamma Serpentis : ウィキペディア英語版 | Gamma Serpentis
Gamma Serpentis (γ Serpentis, γ Ser) is a star in the constellation Serpens, in its head (Serpens Caput). It was a member of indigenous Arabic asterism al-Nasaq al-Sha'āmī, "the Northern Line" of ''al-Nasaqān'' "the Two Lines",〔 along with β Her (Kornephoros), γ Her (Hejian, Ho Keen) and β Ser (Chow).〔 According to the catalogue of stars in the ''Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars'', ''al-Nasaq al-Sha'āmī'' or Nasak Shamiya were the title for three stars :β Ser as ''Nasak Shamiya I'', γ Ser as ''Nasak Shamiya II'', γ Her as ''Nasak Shamiya III'' (exclude β Her).〔(Jack W. Rhoads - ''Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars'', Jet Propulsion Laboratory, California Institute of Technology; November 15, 1971 )〕 The star was later given the proper name Ainalhai, from the Arabic عين الحية ''‘Ayn al-Ḥayyah'' "the Serpent's Eye". In Chinese, (), meaning ''Right Wall of Heavenly Market Enclosure'', refers to an asterism which is represent eleven old states in China which is marking the right borderline of the enclosure, consisting of γ Serpentis, β Herculis, γ Herculis, κ Herculis, β Serpentis, δ Serpentis, α Serpentis, ε Serpentis, δ Ophiuchi, ε Ophiuchi and ζ Ophiuchi.〔 ''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, γ Serpentis itself is known as (, (英語:the Fourth Star of Right Wall of Heavenly Market Enclosure)), represent the state Zheng (鄭) (or Ching),〔(Star Names - R.H.Allen p.376 )〕〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 6 月 24 日 )〕〔 (English-Chinese Glossary of Chinese Star Regions, Asterisms and Star Name ), Hong Kong Space Museum. Accessed on line November 23, 2010.〕 together with 20 Capricorni in ''Twelve States'' (asterism). ==Properties==
Gamma Serpentis is a yellow-white F-type main sequence dwarf with an apparent magnitude of +3.85. Occasionally Gamma Serpentis is listed as having two 10th magnitude companions, but it appears that these stars are just optical neighbours. The Gamma Serpentis system is approximately 36.7 light years from Earth.〔
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