The injection of asteroid fragments into resonances

Details The injection of asteroid fragments into resonances The injection of asteroid fragments into resonances

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..101..174f&link_type=abstract

Icarus (ISSN 0019-1035), vol. 101, no. 2, p. 174-187.

Physics

108

Asteroids, Meteoroids, Orbital Resonances (Celestial Mechanics), Meteorites, Solar System, Asteroids, Fragments, Resonance, Asteroid Belt, Near Earth Asteroids, Neas, Origin, Source, Ejection, Models, Parameters, Parent Bodies, Flux, Vesta, S Asteroids, Meteorites, Stony Meteorites, Chondrites, Ordinary Chondrites, Achondrites, Distribution, Orbital Elements, Size, Velocity, Physical Properties

Scientific paper

A model is presented for the ejection of fragments from impact cratering or breakup of existing asteroids and the chance insertion of the escaping fragments into the 'dangerous' regions of the phase spaces close to the 3:1 and g = g6 resonances, where chaotic behavior may arise. It is found that both resonances are effective channels for fragment collection and delivery and their efficiencies are of the same order of magnitude, but they sample in a different way the orbital elements and the physical properties of the parent objects. Although this depends on the poorly known size distribution of small asteroids, it seems possible that a large fraction of near-earth asteroids and meteorites are generated by a small sample of the asteroid population, mostly located in the vicinity of resonances, whose average properties do not necessarily coincide with those of the general population. The g = g6 resonance is probably an effective fragment delivery channel in the moderate-inclination regions near 2.4 and 2.7 AU and near the inner edge of the belt.

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