Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975saosr.364.....k&link_type=abstract
SAO Special Report #364 (1975)
Astronomy and Astrophysics
Astronomy
21
Equations Of Motion, Equators, Precession, Hamiltonian Functions, Moon, Perturbation Theory, Sun
Scientific paper
Literal expressions for the precessional motion of the mean equator referred to an arbitrary epoch are constructed. Their numerical representations, based on numerical values recommended at the working meeting of the International Astronomical Union Commission held in Washington in September 1974, are obtained. In constructing the equations of motion, the second-order secular perturbation and the secular perturbation due to the long-periodic terms in the motions of the moon and the sun are taken into account. These perturbations contribute more to the motion of the mean equator than does the term due to the secular perturbation of the orbital eccentricity of the sun.
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