Open AccessComparison and Analysis of Solar Position from Three Astronomical Planetary Ephemeris
Author(s) -
Liang Ma,
Xiaolan Wang,
Chao Hu,
Qingqing Qiao
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/330/3/032112
Subject(s) - ephemeris , declination , right ascension , position (finance) , solar eclipse , physics , astronomy , geodesy , geology , satellite , finance , economics
Some astronomical phenomena including eclipse, transit, planetary conjunction and opposition are closely related to position of the Sun. Solar position directly determines the time when these phenomena occur. The premise of calculating these phenomena is to calculate the solar position. With astronomical planetary ephemeris, the solar position at any one time can be obtained. In this present paper, three astronomical ephemeris is used to calculate the solar position, with emphasis on position difference of the Sun. The results show remarkable inconsistencies existing in three ephemeris. The maximum difference of right ascension and declination for the Sun reaches 45 arcseconds and 41 arcseconds, respectively.