Chaotic motion in a comet disk beyond Neptune - The delivery of short-period comets

Details Chaotic motion in a comet disk beyond Neptune - The delivery of short-period comets Chaotic motion in a comet disk beyond Neptune - The delivery of short-period comets

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....98.1477t&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 98, Oct. 1989, p. 1477-1481.

Astronomy and Astrophysics

Astronomy

52

Chaos, Comets, Orbital Mechanics, Solar System, Equations Of Motion, Numerical Integration, Oort Cloud, Orbit Calculation, Solar Orbits, Comets, Disk, Position (Location), Short-Period Comets, Motion, Chaos, Simulations, Monte Carlo Methods, Oort Cloud, Angular Momentum, Source, Distribution, Origin, Perturbations, Timescale, Orbits, Inclination, Orbital Elements, Theoretical Studies, Numerical Methods, Procedure, Calculations

Scientific paper

Recent Monte Carlo simulations have demonstrated that a source with a spherical distribution of orbital angular momenta such as the Oort Cloud cannot give rise to the highly flattened distribution of short-period comets. It was also demonstrated that the problem of delivery could be resolved if short-period comets originate in a low inclination disk of comets beyond the orbit of Neptune. Numerical integrations of cometary motion in this disk show that perturbations by the four major planets can result in chaotic motions which, on long timescales, can deliver comets to low inclination Neptune-crossing orbits. Multistage gravitational scattering by the major planets can then, according to theory, supply short-period comets with orbital elements matching observations.

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