The effect of secular resonances in the asteroid region between 2.1 and 2.4 AU

Details The effect of secular resonances in the asteroid region between 2.1 and 2.4 AU The effect of secular resonances in the asteroid region between 2.1 and 2.4 AU

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..205f&link_type=abstract

In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 205-209 (SEE N93-19113 06-90)

Computer Science

1

Asteroid Belts, Asteroids, Crossings, Hamiltonian Functions, Perturbation Theory, Resonance, Eccentricity, Inclination, Populations

Scientific paper

The asteroid region between 2.1 and 2.4 AU appears to be depopulated at inclinations i greater than 12 deg. This region is surrounded by the three main secular resonances nu5, nu6, and nu16 and is crossed by higher order secular resonances. Secular resonances appear to overlap in this region. Numerical integrations of the orbits of seventeen fictituous asteroids with initial inclinations 12 deg less than or equal to i less than or equal to 20 deg show the following: (1) this particular asteroid region is not depopulated in our computer experiment on timescales of 2.7 Myrs; (2) inclinations are pumped up by successive crossings through higher order secular resonances while eccentricities are not increased sufficiently to produce planet-crossers; (3) bodies located in the bordering nu6 resonance with semi-major axes a less than or equal to 2.4 AU become Earth-crossers on a time scale of 1 Myr; and (4) we confirm the result that modes due to higher order secular resonances must be eliminated when proper elements are computed.

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