Io's secular acceleration vs. observations accuracy

Details Io's secular acceleration vs. observations accuracy Io's secular acceleration vs. observations accuracy

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf...53l&link_type=abstract

SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret

Astronomy and Astrophysics

Astrophysics

Scientific paper

The high dissipation observed on Io's surface (the closest Galilean satellite to Jupiter) since the Voyager spacecraft arrival, has suggested that acceleration on its mean motion must be observed. Although that the detection of tidal accelerations among the Galilean satellites has begun since the beginning of the last century (de Sitter 1928), no real agreement has been found yet. Using a numerical approach, we present how these tidal effects can vanish in the fit to the observations, and so provide reasonable (O-C)s. Three different values for the dissipation have been tested. It appears that the highest one must be rejected as no convergence in the fit can be performed.

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