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The libration and interior structure of large icy satellites and Mercury

Published online by Cambridge University Press:  05 January 2015

Tim Van Hoolst
Tim Van Hoolst*
Affiliation:
Royal Observatory of Belgium Ringlaan 3, B-1180 Brussels, Belgium email: tim.vanhoolst@oma.be Institute of Astronomy, KU Leuven Celestijnenlaan 200D, B-3001 Leuven, Belgium
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Abstract

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Longitudinal librations are periodic changes in the rotation angle of a planet or satellite. Their observation and subsequent interpretation have profoundly increased our understanding of the interior structure of Mercury. Likewise, libration is thought to provide important constraints on the interior structure of icy satellites. Here we study the libration of Mercury and large icy satellites rotating synchronously with their orbital motion and explain how it depends on the interior structure.

Keywords

planets and satellites: individual (Mercury)geodesyrotationicy satellites
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S310: Complex Planetary Systems , July 2014 , pp. 1 - 8
Copyright
Copyright © International Astronomical Union 2014 

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