Tidal evolution in the Neptune-Triton system

Details Tidal evolution in the Neptune-Triton system Tidal evolution in the Neptune-Triton system

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...219l..23c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 219, no. 1-2, July 1989, p. L23-L26.

Astronomy and Astrophysics

Astronomy

14

Neptune (Planet), Orbital Mechanics, Tides, Triton, Comets, Evolution (Development), Neptune, Satellites, Triton, Neptune-Triton System, Tidal Effects, Origin, Evolution, Dissipation, Orbital Elements, Eccentricity, Roche Limit, Obliquity, Timescale, Heating, Parameters, Calculations, Astronomy, Retrograde Motion, Capture

Scientific paper

Triton, which is currently spiralling toward Neptune due to tides raised on both bodies, possesses an obliquity which may lie close to either a zero-deg 'state 1' or a 100-deg 'state 2' which correspond to the two stable Cassini extrema of its rotational Hamiltonian. The Kaula (1966) tidal formalism is presently used to model the past and future evolution of the system in both states. For nominal parameters in state 1, Triton will reach Neptune's Roche limit in about 3.6 Gyr with a decrease in orbital inclination to 145 deg from the current 159 deg; in the case of state 2, Triton's inclination will increase to 180 deg in 10-100 million years and then transition to state 1, subsequently reaching the Neptune Roche limit in about 1.4 Gyr.

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