Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008acasn..49..207z&link_type=abstract
Acta Astronomica Sinica, vol. 49, no. 2, p.207-215
Astronomy and Astrophysics
Astronomy
2
Celestial Mechanics: Ephemeris, General: History And Philosophy Of Astronomy
Scientific paper
Shoushi-Datong calendar is a very important ancient Chinese astronomical calendar,it was applied for over 380 years in the Chinese history. It is introduced to calculate principle and method for the positions of five planets by Shoushi-Datong. It is analysed to produce the reasons for actual motion's errors of five planets computed by Shoushi-Datong calendar. It is discussed to calculate ``ying suo cha'' by Shoushi-Datong calendar and ``centre difference'' by modern astronomy. The daily positions of the five planets (1531) are computed by Shoushi-Datong calendar and modern astronomical method respectively. The computational results are studied by comparative analysis of the mean and actual motion of five planets such as synodic period, backward movement and angular velocity of coition or opposition act.The quantitative analysis are given in this paper.
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