Physics
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...77..135b&link_type=abstract
Icarus (ISSN 0019-1035), vol. 77, Jan. 1989, p. 135-147.
Physics
9
Neptune (Planet), Planetary Rings, Polar Orbits, Equations Of Motion, Libration, Triton, Neptune, Rings, Polar Regions, Physical Properties, Particles, Orbits, Satellites, Triton, Stability, Dynamics, Inclination, Diagrams, Geometry, Calculations, Librations, Energy, Dissipation, Rings Arcs, Tidal Effects
Scientific paper
The near-polar-position rings whose possible existence and character around Neptune are presently considered correspond to the equilibrium configuration of a test-particle orbital plane in the gravitational potential of Neptune and Triton. At these equilibria, of which two whose invariable-plane nodal line is approximately perpendicular to the nodal line of Triton on the same plane are dynamically stable, the orbit of the test particle maintains a fixed orientation with respect to the invariable plane and the node of triton on that plane. The stable equilibria are noted to correspond to a maximum of the total energy for a given semimajor axis; their stability is found to remain unperturbed despite collisions among particles.
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