Strong chaos induced by close encounters with Ceres and Vesta (J. Laskar et al.)

Vol. 532In section 1. Letters

Strong chaos induced by close encounters with Ceres and Vesta

by J. Laskar, M. Gastineau, J.-B. Delisle, A. Farrés, and A. Fienga, A&A 532, L4

A&A Press release. Astronomy & Astrophysics is publishing a new study of the orbital evolution of minor planets Ceres and Vesta, a few days before the flyby of Vesta by the Dawn spacecraft. A team of astronomers found that close encounters among these bodies lead to strong chaotic behavior of their orbits, as well as of the Earth's eccentricity. This means, in particular, that the Earth's past orbit cannot be reconstructed beyond 60 million years. Read the A&A press release.