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Weak dynamical effects in the Uranian ring systemPublished 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.
Document ID
19830058386
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Freedman, A. P.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Tremaine, S.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Elliot, J. L.
(MIT Cambridge, MA, United States)
Date Acquired
August 11, 2013
Publication Date
July 1, 1983
Publication Information
Publication: Astronomical Journal
Volume: 88
ISSN: 0004-6256
Subject Category
Lunar And Planetary Exploration
Accession Number
83A39604
Funding Number(s)
CONTRACT_GRANT: NSF AST-82-10463
CONTRACT_GRANT: NSG-7643
CONTRACT_GRANT: NGL-22-009-638
CONTRACT_GRANT: NSF AST-80-10699
Distribution Limits
Public
Copyright
Other

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