Dynamical aspects of the origin of comets

Details Dynamical aspects of the origin of comets Dynamical aspects of the origin of comets

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87.1318f&link_type=abstract

Astronomical Journal, vol. 87, Sept. 1982, p. 1318-1332.

Computer Science

Numerical Analysis

55

Astronomical Models, Comets, Orbit Perturbation, Orbital Elements, Solar System, Gas Giant Planets, Numerical Analysis, Origins, Perihelions, Planetary Evolution

Scientific paper

The dynamical histories of comets with different birthplaces under the influence of both planetary and stellar perturbations is discussed, paying special attention to the current rate of comet passages resulting from a certain assumed comet origin. The mass content of the cometary reservoir is estimated, and it is found that a cometary origin in the Uranus-Neptune region produces the greatest current rate of comet passages as compared to cometary origins in the Jupiter region or in situ. With Uranus-Neptune origin the current population of the cometary reservoir can be estimated at a few ten billions of comets. Origin in the neighborhood of Jupiter would require that planet to remove a dynamically unrealistic mass of comets, whereas the mass removed by Uranus and Neptune would be reasonable. In situ origin is dynamically unattractive because of its low efficiency in bringing comets into the solar system.

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