Orbital evolution studies of asteroids near the 5:2 mean motion resonance with Jupiter

Details Orbital evolution studies of asteroids near the 5:2 mean motion resonance with Jupiter Orbital evolution studies of asteroids near the 5:2 mean motion resonance with Jupiter

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...246..603h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 246, no. 2, June 1991, p. 603-618. Research supported by SERC.

Astronomy and Astrophysics

Astrophysics

11

Asteroids, Comets, Jupiter (Planet), Orbital Resonances (Celestial Mechanics), Solar Orbits, Solar System Evolution, Asteroid Belts, Astronomical Models, Eccentric Orbits, Numerical Integration, Orbit Perturbation

Scientific paper

Results are presented of an extended investigation, based on numerical integration studies, of the stability of the orbits of both mainbelt and planet-crossing asteroids currently close to the 5:2 mean-motion resonance. A solar system model which includes the perturbations of all the planets from Venus to Neptune for the mainbelt objects as well as Mercury for the planet-crossers are used. For 15 mainbelt orbits, nonresonant behavior was found with the critical arguments circulating and the eccentricities varying between 0.0 and 0.3. Out of the remaining 14 orbits, eight became Mars-crossing, and of those, three earth-crossing and two Jupiter-crossing. Rapid orbital evolutions on timescales of 10,000 years are typically found as well as eccentricities reaching values as high as 0.8 and 0.9. A comparison with results obtained by Yoshikawa (1989) shows that the evolutions are very sensitive to the starting elements used but less dependent on the solar system model used for the integrations.

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