DYNAMICS OF SMALL BODY ORBITS AMONG GIANT PLANETS - MEAN MOTION RESONANCES

摘要

We report on a numerical experiment showing that even in one of the most chaotic regions of the Solar System - the region of the giant planets, there are numerous narrow bands where mean motion resonances (MMRs) can stabilize orbits of small bodies in a time span comparable to their lifetimes (among Jupiter and Saturn). Two types of temporary stabilization were observed: short period (～ 10~4 years) when a body was in a MMR. with only 1 planet and long period (over 10~5 years) when a body is located near overlapping resonant relations with 2 or 3 planets. The experiment also showed that the Main Belt region can be enriched by a cometary material due to resonant interactions.