Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010acasn..51..184z&link_type=abstract
Acta Astronomica Sinica, vol. 51, no. 2, p.184-197
Astronomy and Astrophysics
Astronomy
Celestial Mechanics, Astrometry, History And Philosophy Of Astronomy, Planets And Satellites
Scientific paper
The observations and researches of five-planet are one of the important part of ancient calendars and also one of the methods to evaluate their accuracies. So astronomers paid much attention to this field. In "Hanshu·Tian wen zhi" and "Xuhanshu· Tian wen zhi", there are 160 records with detailed dates and positions, which are calculated and studied by the modern astronomical method in this paper. The calculated results show that these positions are mostly correct, taking up 77.5% of the total records. While the rest 36 records are incorrect, taking up 22.5%. In addition, there are three typical or special forms of five-planet movements. The numbers of “shou”, “he”, “fan” movements are 14, 22 and 46, taking up 9%, 14% and 29%, respectively. In this paper, a detailed research on these three typical forms of five-planet movements is carried out. We think that the 36 incorrect records are caused by various reasons, but mainly in the data processes carried out by later generations.
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