Evolution of comet orbits under the perturbing influence of the giant planets and nearby stars

Details Evolution of comet orbits under the perturbing influence of the giant planets and nearby stars Evolution of comet orbits under the perturbing influence of the giant planets and nearby stars

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icar...42..406f&link_type=abstract

Icarus, vol. 42, June 1980, p. 406-421. Research supported by the Ministry of Education of Spain.

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31

Astronomical Models, Comets, Gas Giant Planets, Orbit Perturbation, Orbital Elements, Solar Orbits, Aphelions, Neptune (Planet), Perihelions, Stellar Motions, Uranus (Planet), Comets, Evolution, Orbits, Perturbations, Planets, Stars, Origin, Parameters, Perihelion, Inclinations, Gravity, Simulations, Mass, Eccentricities, Observations, Distribution, Long-Period Comets, Mathematical Models, Experiments, Oort Clouds, Formation

Scientific paper

A study of the orbital evolution of 500 hypothetical comets during 10 to the 9th years is presented. It was assumed that the birthplace of such comets was the region of Uranus and Neptune from where they were deflected into very elongated orbits by perturbations of these planets. The perihilion distances between 20 and 30 AU were adopted, along with inclinations to the ecliptic plane smaller than 20 deg, and semimajor axes from 5000 to 50,000 AU. At the end of the study, the semimajor axes of the surviving comets tend to be concentrated in the comet orbit interval between 20,000 and 30,000 AU. The orbital planes of the comets with initial comet orbit at least or greater than 30,000 AU acquired a complete randomization while the others still maintain a slight predominance of direct orbits.

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