Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88.1053f&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 88, July 1983, p. 1053-1059.
Astronomy and Astrophysics
Astronomy
5
Astrodynamics, Gravitational Effects, Natural Satellites, Uranus Rings, Kinematics, Orbit Perturbation, Precession, Resonance, Uranus, Rings, Dynamics, Gravity Effects, Kinematics, Orbits, Models, Satellites, Mass, Resonance, Miranda, Ariel, Precession, Calculations, Perturbations
Scientific paper
Published data on the orbits of the rings and satellites of Uranus are analyzed in terms of their dynamic interaction, in an attempt to explain discrepancies between current kinematic models of the ring system and recent, very accurate occultation observations. Apse precession, short-term perturbations, satellite resonance, and the movement of the planet and rings with respect to the barycenter of the planet-satellite system are investigated. It is found that the five known satellites could cause the observed ring residuals by shifting the barycenter, but not by direct or resonance effects. Hypothetical interring shepherd satellites of limited mass (such as about 10 to the 19th g for a shepherd between rings 4 and 5), possibly affected by known-satellite resonances, could influence the rings directly.
Elliot James L.
Freedman Adam P.
Tremaine Scott
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