EDP Sciences
Free Access
Issue
A&A
Volume 420, Number 3, June IV 2004
Page(s) 1171 - 1183
Section Celestial mechanics and astrometry
DOI https://doi.org/10.1051/0004-6361:20034565
Published online 04 June 2004


A&A 420, 1171-1183 (2004)
DOI: 10.1051/0004-6361:20034565

New accurate ephemerides for the Galilean satellites of Jupiter

I. Numerical integration of elaborated equations of motion
V. Lainey1, L. Duriez1, 2 and A. Vienne1, 2

1  Institut de Mécanique Céleste et de Calcul des Éphémérides - Observatoire de Paris, UMR 8028 du CNRS, 77 avenue Denfert-Rochereau, 75014 Paris, France
2  Université Lille1 IMCCE/LAL, 1 Impasse de l'Observatoire, 59000 Lille, France

(Received 23 October 2003 / Accepted 15 March 2004 )

Abstract
We present a new theory of the four Galilean satellites Io, Europa, Ganymede and Callisto. This theory aims to deliver highly accurate ephemerides able to represent the Galilean satellites' motion over several centuries. It is based on the numerical integration of elaborated equations of motion. This first paper describes and tests many usually neglected perturbations. We are then able to retain some of them in the dynamical model for the Galilean system. A numerical method developed to adjust the model to the observations is given. We used a general formalism so it can be extended to systems other than the Galilean one. As an example of this method, we compare our model to the current E5 ephemerides of the four Galileans.


Key words: celestial mechanics -- planets and satellites: individual: Jupiter -- ephemerides

Offprint request: V. Lainey, lainey@imcce.fr




© ESO 2004

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.