1507年1月13日中心食观测记载得到的世界时改正数  

A Delta-T Value from the Record of Central Eclipse on January 13,1507

作　　者：马利华[1] Ma Lihua(National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China)

机构地区：[1]中国科学院国家天文台,北京100101

出　　处：《天文研究与技术》2023年第1期90-94,共5页Astronomical Research & Technology

摘　　要：清代乾隆年间,安徽《铜陵县志》有1507年(明代正德二年)1月发生了一次中心食(日全食和日环食的统称)的观测记载。利用现代天文行星历表计算了此次日食的日食带,研究当时的世界时改正数。结合明代嘉靖年间江西《东乡县志》和清代顺治安徽《望江县志》两处地方志关于此次日食的观测记载,进一步分析了东乡县和望江县对此次日食的可观测情况。本文研究对于地球自转的长期变化研究具有一定的参考价值。In the Qing Dynasty Qianlong Anhui Tongling County Chronicle,there was an observation record of a central eclipse(collectively referred to as total solar eclipse and annular solar eclipse)in January 1507(the 2nd year of Zhengde of Ming Dynastry).The author uses the modern astronomical planetary ephemeris to calculate the eclipse of this solar eclipse,and then obtains the correction number of the UT(Universal Time)at that time.Combined with the observation records of this solar eclipse in Dongxiang County Chronicle of Jiangxi in Jiajing of Ming Dynasty and Wangjiang County Chronicle of Anhui in Shunzhi of Qing Dynasty,the observable situation of this solar eclipse in Dongxiang and Wangjiang counties is further analyzed.The results of this study have reference value for related researches about secular change in the Earth′s rotation.

关 键 词：中心食 日食观测记载 世界时改正数 

分 类 号：P125.11[天文地球—天体测量]