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http://dx.doi.org/10.5140/JASS.2004.21.4.493

THE SOLAR ECLIPSE PREDICTIONS OF CHILEONGSAN-OEPYEON IN EARLY CHOSEON  

Ahn, Young-Sook (Korea Astronomy Observatory)
Lee, Yong-Sam (Dept. of Astronomy & Space Science, College of Natural Science and Institute for Basic Science Research, Chungbuk National University)
Publication Information
Journal of Astronomy and Space Sciences / v.21, no.4, 2004 , pp. 493-504 More about this Journal
Abstract
The history books of East Asia about astronomical phenomena have the more records of the solar eclipse frequently than any other ones. It is because traditionally, the solar eclipse moaned the fate of dynasty and the king's rule. The Sun, the biggest thing in the heaven symbolized the king, and the solar eclipse foresaw that the king had the problem in private including the body, and the country might suffer from difficulties in a great scale. So the king and all of the ministers used to gather to hold a ceremony named Gusikrye(구식례) which solar eclipse may pass safely. Consequently, kings always had concernments on collecting informations of solar eclipse. Inspite of importance of solar eclipse predictions, but at the beginning of the Choseon, the predictions of the solar eclipse didn't fit. King Sejong compiled the Chiljeongsan-naepion (칠정산내편) and the Chiljeongsan-oepyeon(칠정산외편) to calculate the celestial phenomena including the solar eclipse. By the publications of these two books, the calendar making system of Choseon was firmly established. The Chiljeongsan-oepyeon adopted Huihui calendar(회회력) of Arabia. The Solar eclipse predictions of Chiljeongsan-oepyeon were relative correct compared to modern method in early Choseon dynasty.
Keywords
calendar; solar eclipse; history of astronomy;
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