Migration of Jupiter-family comets and resonant asteroids to near-Earth space
| dc.creator | Ipatov, S. I. | |
| dc.creator | Mather, J. C. | |
| dc.date | 2003-03-11 | |
| dc.date.accessioned | 2026-07-07T02:07:51Z | |
| dc.date.available | 2026-07-07T02:07:51Z | |
| dc.description | We estimated the rate of comet and asteroid collisions with the terrestrial planets by calculating the orbits of 13000 Jupiter-crossing objects (JCOs) and 1300 resonant asteroids and computing the probabilities of collisions based on random-phase approximations and the orbital elements sampled with a 500 yr step. The Bulirsh-Stoer and a symplectic orbit integrator gave similar results for orbital evolution, but sometimes give different collision probabilities with the Sun. A small fraction of former JCOs reached orbits with aphelia inside Jupiter's orbit, and some reached Apollo orbits with semi-major axes less than 2 AU, Aten orbits, and inner-Earth orbits (with aphelia less than 0.983 AU) and remained there for millions of years. Though less than 0.1% of the total, these objects were responsible for most of the collision probability of former JCOs with Earth and Venus. Some Jupiter-family comets can reach inclinations i>90 deg. We conclude that a significant fraction of near-Earth objects could be extinct comets that came from the trans-Neptunian region. | |
| dc.description | Proc. of the international conference "New trends in astrodynamics and applications" (20-22 January 2003, University of Maryland, College Park) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0303219 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0303219 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/5836 | |
| dc.subject | Astrophysics | |
| dc.title | Migration of Jupiter-family comets and resonant asteroids to near-Earth space | |
| dc.type | text |