Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989sci...245..500g&link_type=abstract
Science (ISSN 0036-8075), vol. 245, Aug. 4, 1989, p. 500-504.
Physics
93
Neptune (Planet), Orbit Perturbation, Planetary Evolution, Triton, Nereid, Orbital Resonances (Celestial Mechanics), Planetary Orbits, Planetary Rings, Neptune, Satellites, Hypotheses, Origin, Capture, Orbits, Evolution, Tidal Effects, Orbital Elements, Perturbations, Ring Arcs, Eccentricity, Inclination, Calculations, Gravity Effects, Rings, Formation, Dissipation, Celestial Mechanics, Gas Drag, Corotation, Resonance
Scientific paper
It is conjectured that Triton was captured from a heliocentric orbit as the result of a collision with what was then one of Neptune's regular satellites. The immediate post-capture orbit was highly eccentric. Dissipation due to tides raised by Neptune in Triton caused Triton's orbit to evolve to its present state in less than one billion years. For much of this time Triton was almost entirely molten. While its orbit was evolving, Triton cannibalized most of the regular satellites of Neptune and also perturbed Nereid, thus accounting for that satellite's highly eccentric and inclined orbit. The only regular satellites of Neptune that survived were those that formed well within 5 Neptune radii, and they move on inclined orbits as the result of chaotic perturbations forced by Triton.
Banfield Don
Goldreich Peter
Longaretti Pierre-Yves
Murray Nathan
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