An estimate of resident time of the Oort Cloud new comets in planetary region
arXiv:2412.20507 · doi:10.1016/j.pss.2024.105984
Abstract
We describe the result of our numerical orbit simulation which traces dynamical evolution of new comets coming from the Oort Cloud. We combine two dynamical models for this purpose. The first one is semi-analytic, and it models an evolving comet cloud under galactic tide and encounters with nearby stars. The second one numerically deals with planetary perturbation in the planetary region. Although our study does not include physical effects such as fading or disintegration of comets, we found that typical dynamical resident time of the comets in the planetary region is about years. We also found that the so-called planet barrier works when the initial orbital inclination of the comets is small. A numerical result concerning the temporary transition of the comets into other small body populations such as transneptunian objects or Centaurs is discussed.
174 pages, 64 figures, 5 tables. Accepted for publication in Planetary and Space Science. This manuscript is the third submitted version
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