17–19 mai 2016
Meudon site
Fuseau horaire Europe/Paris

A study of the past dynamics of comet 67P/Churyumov-Gerasimenko with fast Lyapunov indicators

19 mai 2016, 16:15
45m
Amphitheater Building 18 (Meudon site)

Amphitheater Building 18

Meudon site

Talk The Rosetta mission The Rosetta Mission

Orateur

Dr Elena Lega (OCA)

Description

On the basis of backward numerical integrations of a large set of simulated comets whose initial conditions were obtained from small variations of the orbital parameters of comet 67P, and using the analysis of suitable chaos indicators, we detect the phase--space structure of the past close encounters of the comet with Jupiter. On the basis of these computations we find that the probability that the comet could have been injected into the inner solar system from distances larger than 100 AU from the Sun in the past 150000 years is about 60 percent.

Auteur principal

Dr Elena Lega (OCA)

Documents de présentation