High area-to-mass ratios geostationary space debris : stability and secondary resonances (MEGNO and frequency analysis)

Astronomy and Astrophysics – Astrophysics

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Recently a new unexpected population of 10 cm size space debris near the geostationary orbit (GEO) has been discovered. These objects with high area-to mass ratios sometimes present highly eccentric orbits %with eccentricities as high as 0.55 (Schildknecht et al., 2004, 2005). Recent numerical and analytical investigations (Anselmo & Pardini, 2005; Liou & Weaver, 2005) prove that this newly discovered population consists of near geosynchronous objects with high area-to-mass ratios. The large area-to-mass ratios space debris have a dynamical behavior dominated by the solar radiation pressure and the resonance with C_{22} spherical harmonic. In this paper we develop further the analysis done by tet{valk08b} by using a frequency analysis to study both the stability and the resonances %of the dynamics of such particular orbits.

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