THE COMMON ORIGIN OF THE HIGH INCLINATION TNO'S


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Abstract

Numerical integrations of the four major planets orbits inside a primordial planetesimals disk show that a fraction of Neptune primordial scattered objects are deposited into the classical Kuiper Belt at Solar System age. These objects exhibit inclinations as high as 40° and can account for present high inclinations population in the classical Kuiper Belt. The same mechanism can also originate high perihelion scattered objects like 2000 CR105. The process that in the end produced such objects can be divided into two phases, a migration phase where nonconservative dynamics acted to produce some stable objects already at 108 years and a nonmigrating phase that helped to establish some other objects as stable TNO's. Low inclination CKBO's have in principle an origin through the resonance sweeping process, although some results from numerical integrations at least suggest a possible origin also from the primordial Neptune scattered population.

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