Evolution of Mercury into the 3/2 spin-orbit resonance

Details Evolution of Mercury into the 3/2 spin-orbit resonance Evolution of Mercury into the 3/2 spin-orbit resonance

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dps....37.5717c&link_type=abstract

American Astronomical Society, DPS meeting #37, #57.17; Bulletin of the American Astronomical Society, Vol. 37, p.1571

Astronomy and Astrophysics

Astronomy

Scientific paper

Here we revisit the history of Mercury's spin since the planet was formed, including the effect of planetary perturbations on both the orbit and spin. We explore a large variety of initial conditions to cover the possible formation and evolutionary scenarios. We test several dissipation models and parameters to evaluate their contribution to the planet's spin history. We confirm that despite the variations in the models, the 3/2 spin-orbit resonance remains the most probable outcome of planetary evolution (Correia and Laskar, Nature, 429, 2004). Our study is presented in a very general setting and should apply to any terrestrial planet (or satellite) whose eccentricity is excited by external forces.

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