"Kaigen Senkei" - Kaigen Senkei

Japanese: 《開元占経》 - かいげんせんけい
"Kaigen Senkei" - Kaigen Senkei

…Shi Shen and others in the Warring States period conducted observations including the 28 constellations, observing their entering and leaving degrees, and in the Han dynasty, Ling Dong and others determined the equatorial degrees during the Taichu calendar reform (104 B.C.). The values ​​recorded in the Kaiyuan Zhanjing of the Tang dynasty are said to be records of observations made in the first half of the 1st century B.C. In the observations made by Liang Lingzan and others during the Kaiyuan period of the Tang dynasty (first half of the 8th century), only the constellation Kui was different from previous ones (δ Andromeda). …

*Some of the terminology explanations that refer to "Kaiyuan Zhan Jing" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…戦国時代の石申らは二十八宿星を含む観測を行い,入宿度と去極度を観測し,漢代には太初改暦(前104)のときに落下閎らが赤道宿度を決定した。また唐の《開元占経》などに収録された値は前1世紀の前半の観測の記録をとどめたものとされている。唐の開元年間(8世紀前半)に梁令瓚らが行った観測では,奎宿のみがそれまでのものと異なっていた(アンドロメダ座δ)。…

※「《開元占経》」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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