基于公元前443年10月13日日食观测记录的地球自转速率长期变化研究

IF 0.7 Q4 ASTRONOMY & ASTROPHYSICS

Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2023-06-01 DOI:10.2478/arsa-2023-0005

Lihua Ma

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引用次数: 0

摘要

《二十四史》(中国从上古到明代的王朝史书)记载了秦立公年间(公元前443年10月13日)发生的一次日食。利用现代天文行星星历，对观测记录进行了研究。结果表明，这次日食可能发生在秦都永城的日落前后，日落时间正好在日食的第一次接触阶段(偏食开始)和第四次接触阶段(偏食结束)之间。此外，本文还研究了当时地球自转速率的长期变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Study on Secular Change of the Earth’s Rotation Rate Based on Solar Eclipse Observation Records on October 13, 443 BC

ABSTRACT An observation of a solar eclipse that occurred on October 13, 443 BC during the reign of the Duke Ligong of Qin was recorded in the Twenty-Four Histories (China’s dynastic histories from remote antiquity till the Ming Dynasty). With modern astronomical planetary ephemeris, the observation records were studied. The results showed that the eclipse probably occurred around sunset in Yongcheng, the capital of Qin, where the sunset time was exactly between the first contact stage (partial eclipse begins) and the fourth contact stage (partial eclipse ends) of the eclipse. Furthermore, secular change of the earth’s rotation rate at that time is investigated in this work.

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来源期刊

Artificial Satellites-Journal of Planetary Geodesy ASTRONOMY & ASTROPHYSICS-

CiteScore

1.00

自引率

11.10%

发文量