EDP Sciences
Free access
Volume 429, Number 1, January I 2005
Page(s) 361 - 367
Section Celestial mechanics and astrometry
DOI http://dx.doi.org/10.1051/0004-6361:20048159

A&A 429, 361-367 (2005)
DOI: 10.1051/0004-6361:20048159

Analytical and numerical studies of asteroid perturbations on solar system planet dynamics

A. Fienga and J.-L. Simon

Institut de mécanique céleste et de calcul des éphémérides (IMCCE) - Observatoire de Paris, UMR 8028 du CNRS, 77 avenue Denfert-Rochereau, 75014 Paris, France
    e-mail: fienga@imcce.fr

(Received 26 April 2004 / Accepted 5 August 2004 )

We present the first results based on the new analytical solution of planetary motion, VSOP2002b (Variations Seculaires des Orbites Planetaires) and on our new planetary numerical integration. After the presentation of this new solution, we discuss the impact of the perturbations induced by the main belt asteroids on short term dynamics of inner planets. We used our two planetary solutions, one analytical (VSOP2002b) and one numerical, to estimate such impacts. Comparisons are made with JPL DE405 and new contributions to Mercury and Venus orbits arise. Same results are found with the two methods and the accuracy limit of the new analytical solution is extended a few tens of meters over three decades for the Mars and the Earth-Moon Barycenter (EMB) orbits.

Key words: ephemerides -- planets and satellites: general -- minor planets, asteroids -- celestial mechanics

© ESO 2004