Variation of Area-to-Mass-Ratio of HAMR Space Debris Objects

Details Variation of Area-to-Mass-Ratio of HAMR Space Debris Objects Variation of Area-to-Mass-Ratio of HAMR Space Debris Objects

2011-10-18

arxiv.org/abs/1110.3935v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

10 pages, accepted Monthly Notices of Royal Astronomical Society, MN-11-1785-MJ.R1, The definitive version is available at w

Scientific paper

An unexpected space debris population has been detected in 2004 Schildknecht et al. (2003, 2004) with the unique properties of a very high area-to-mass ratio (HAMR) Schildknecht et al. (2005a). Ever since it has been tried to investigate the dynamical properties of those objects further. The orbits of those objects are heavily perturbed by the effect of direct radiation pressure. Unknown attitude motion complicates orbit prediction. The area-to-mass ratio of the objects seems to be not stable over time. Only sparse optical data is available for those objects in drift orbits. The current work uses optical observations of five HAMR objects, observed over several years and investigates the variation of their area-to-mass ratio and orbital parameters. A normalized orbit determination setup has been established and validated with two low and two of the high ratio objects, to ensure, that comparable orbits over longer time spans are determined even with sparse optical data.

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