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Résumé
In this paper we provide an extensive analysis of the global dynamics of high-area-to-mass ratios
geosynchronous (GEO) space debris, applying a recent technique developed by Cincotta et al.
(2000), Mean Exponential Growth factor of Nearby Orbits (MEGNO), which provides an efficient
tool to investigate both regular and chaotic components of the phase space.
We compute a stability atlas, for a large set of near-geosynchronous space debris by numerically
computing the MEGNO indicator, to provide an accurate understanding of the location
of stable and unstable orbits as well as the timescale of their exponential divergence in case of
chaotic motion. The results improve the analysis presented in Breiter et al. (2005a) notably by
considering the particular case of high-area-to-mass ratios space debris. The results indicate that
chaotic orbits region can be highly relevant, especially for very high area-to-mass ratios.
Then, we provide some numerical investigastions and an analytical theory which lead to a
detailed understanding of the resonance structures appearing in the phase space. These analyses
bring to the fore a relevant class of secondary resonances on both sides of the well-known
pendulum-like pattern of geostationary space debris, leading to complex dynamics of such objects.
langue originale | Anglais |
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Pages (de - à) | 1509-1526 |
Nombre de pages | 18 |
journal | Advances in Space Research |
Volume | 43 |
Etat de la publication | Publié - 2009 |
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