Other
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..516n&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.516
Other
Scientific paper
The Cassini space mission gives the opportunity to have a better knowledge of the properties of the main Saturnian satellites. Among them, Mimas is up to now poorly known, and was considered as a cold rigid body until Cassini observed surface temperature inhomogeneities. The scope of this study is to model the rotation of Mimas with different interior models, based on compaction experiments by Yasui et al. 2009 [6], allowing to consider Mimas as a rigid body composed of 2 solid layers. We also considered 2 different hypotheses for the interior model: a model based on Mimas' observed shape, and another one based on the hydrostatic approximation. The rotation has been numerically computed using the 3 degree of freedom model of rigid rotation of Henrard. Physical longitudinal librations of 4 km are to be expected, and an obliquity of 2 arcmin, while the deviation of the equilibrium position because of tides is expected to be negligible.
Karatekin Ö.
Noyelles Benoît
Rambaux Nicolas
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