Abstract
Long-term numerical simulations of main-belt meteoroid and small asteroid orbital evolution with the Yarkovsky effect resulted in several puzzling (and challenging) facts when the orbits got into interaction with weak resonances. Orbits of small asteroids, slowly drifting due to the Yarkovsky effect, may reside in the resonance zone for sufficiently long time. Thereupon the eccentricity and inclination may slowly evolve. Overlapping of close resonances, or multiplets of a single high-order resonance, may cause that the classical theory of capture in a single resonance (as previously applied to tidal evolution of satellites of PR-evolving dust orbits in low order exterior resonances with inner planets) is not applicable. Here we show few examples of these processes based on numerical simulations. Analytical estimation of the chaotic diffusion rate in eccentricity and inclination in these more complex dynamical situations is an important challenge for the future theory.
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