Articles

Dynamical Lifetimes of Objects Injected into Asteroid Belt Resonances

See allHide authors and affiliations

Science  11 Jul 1997:
Vol. 277, Issue 5323, pp. 197-201
DOI: 10.1126/science.277.5323.197

You are currently viewing the abstract.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

Abstract

Numerical simulations of particles placed in orbital resonances in the main asteroid belt show that the typical dynamical lifetimes of objects that could become near-Earth asteroids or meteorites are only a few million years, with the majority destroyed by being transferred to Jupiter-crossing orbits or being driven into the sun. Particles that fortuitously migrate to the terrestrial planet region may be pushed to high-inclination orbits by resonances but are still dynamically eliminated on time scales of ∼10 million years. These shorter lifetimes may require a reassessment of our qualitative understanding about near-Earth asteroids and meteorite delivery.

  • * To whom correspondence should be addressed. E-mail: gladman{at}obs-nice.fr

View Full Text