Résumé
The dynamics of space debris with very high A/m near
the geostationary orbit is dominated by the gravitational
coefficient C22 and the solar radiation pressure. We propose
a stability atlas, for a large set of these objects, by
numerically computing a diffusion indicator (using FMA).
The results show chaotic layers around the separatrix and
a relevant class of secondary resonances (associated to
the period of the sun) near the pendulum-like pattern
of geostationary objects. This succession of stable and
chaotic layers can be reproduced and explained by a simple
toy model, based on a pendulum approach, perturbed,
through the eccentricity, by the Sun frequency. The use
of action-angle variables in the circulation and libration
regions of the pendulum allows to point out new resonances
between the geostationary libration angle and the
Sun's longitude.
langue originale | Anglais |
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titre | Fifth European Conference on Space Debris |
Lieu de publication | Darmstadt, Germany |
Editeur | ESOC |
Etat de la publication | Non publié - 2009 |