Planetary perturbations on the Libration of the Moon |
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| Authors: | M Moons |
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| Institution: | (1) Department of Mathematics, Facultés Universitaires N.D. de la Paix, Rempart de la Vierge, 8, B-5000 Namur, Belgium |
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| Abstract: | A theory of the libration of the Moon, completely analytical with respect to the harmonic coefficients of the lunar gravity field, was recently built (Moons, 1982). The Lie transforms method was used to reduce the Hamiltonian of the main problem of the libration of the Moon and to produce the usual libration series p1, p2 and  . This main problem takes into account the perturbations due to the Sun and the Earth on the rotation of a rigid Moon about its center of mass. In complement to this theory, we have now computed the planetary effects on the libration, the planetary terms being added to the mean Hamiltonian of the main problem before a last elimination of the angles. For the main problem, as well as for the planetary perturbations, the motion of the center of mass of the Moon is described by the ELP 2000 solution (Chapront and Chapront-Touze, 1983). |
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