Physics – Geophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..117w&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 117-119 (SEE N87-23341 16-91)
Physics
Geophysics
Asteroids, Orbital Mechanics, Satellite Orbits, Satellite Rotation, Solar System, Spatial Distribution, Three Body Problem, Angular Momentum, Deimos, Hyperion, Jupiter (Planet), Mars (Planet), Orbit Perturbation, Resonance, Shapes
Scientific paper
The rotational dynamics of irregularly shaped satellites and the origin of Kirkwood Gaps are discussed. The chaotic tumbling of Hyperion and the anomalously low eccentricity of Deimos are examined. The Digital Orrery is used to explore the phase space of the ellipic restricted three body problem near the principal commensurabilities (2/1, 5/2, 3/1, and 3/2). The results for the 3/1 commensurability are in close agreement with those found earlier with the algebraic mapping method. Large chaotic zones are associated with the 3/1, 2/1 and 5/2 resonances, where there are gaps in the distribution of asteroids. The region near the 3/2 resonance, where the Hilda group of asteroids is located, is largely devoid of chaotic behavior. Thus, there is a qualitative agreement between the character of the motion and the distribution of asteroids.
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