The Origin of Chaos in the Outer Solar System

Abstract

Classical analytic theories of the solar system indicate that it is stable, but numerical integrations suggest that it is chaotic. This disagreement is resolved by a new analytic theory. The theory shows that the chaos among the Jovian planets results from the overlap of the components of a mean motion resonance among Jupiter, Saturn, and Uranus, and provides rough estimates of the Lyapunov time (10 million years) and the dynamical lifetime of Uranus (10^{18} years). The Jovian planets must have entered the resonance after all the gas and most of the planetesimals in the protoplanetary disk were removed.

19 pages, 3 figures, to appear in Science

References in corpus (2)

• Migrating Planets
• A Planet Orbiting the Star Rho Coronae Borealis

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