Study on "double dawn  

作　　者：刘次沅 李建科 周晓陆 

出　　处：《Science China Mathematics》1999年第11期1224-1232,共9页中国科学：数学（英文版）

基　　金：Project supported by the Xia-Shang-Zhou Chronology Project ;Director Foundation of the Chinese Academy of Sciences.

摘　　要：The ancient record, 'During the first year of King Yi, the day dawned twice at Zheng', has provided important clues to early Chinese chronicles. The astronomical conditions and visible area distributions related to such a 'double dawn' event are discussed, and the precision and current problems in the calculations of ancient astronomical phenomena are shown. On such a basis, all the solar eclipses from 1000 BC to 840 BC are calculated and their associated 'double dawn' features investigated. The conclusion that the 'double dawn' was a solar eclipse occurring on April 21st, 899 BC is corfirmed to be the most reasonable.The ancient record, “During the first year of King Yi, the day dawned twice at Zheng”, has provided important clues to early Chinese chronicles. The astronomical conditions and visible area distributions related to such a “double dawn” event are discussed, and the precision and current problems in the calculations of ancient astronomical phenomena are shown. On such a basis, all the solar eclipses from 1000 BC to 840 BC are calculated and their associated “double dawn” features investigated. The conclusion that the “double dawn” was a solar eclipse occurring on April 21st, 899 BC is corfirmed to be the most reasonable.

关 键 词：ASTRONOMY HISTORY CHRONOLOGY SOLAR eclipse. 

分 类 号：P1-092[天文地球—天文学]