Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cemda.101..203b&link_type=abstract
Celestial Mechanics and Dynamical Astronomy, Volume 101, Issue 1-2, pp. 203-224
Astronomy and Astrophysics
Astronomy
Spin&Ndash, Orbit Problem, Adiabatic Invariants
Scientific paper
We provide evidences that the angular momentum of a symmetric rigid body in a spin orbit resonance can perform large scale chaotic motions on time scales which increase polynomially with the inverse of the oblateness of the body. This kind of irregular precession appears as soon as the orbit of the center of mass is non-circular and the angular momentum of the body is far from the principal directions with minimum (maximum) moment of inertia. We also provide a quantitative explanation of these facts by using the theory of adiabatic invariants, and we provide numerical applications to the cases of the 1:1 and 1:2 spin orbit resonances.
Benettin Giancarlo
Guzzo Massimiliano
Marini Valerio
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