Space project MIMOSA

Astronomy and Astrophysics – Astronomy

Scientific paper

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Geodetic Astronomy

Scientific paper

The aim of the project MIMOSA is to improve the knowledge of the close Earth artificial satellites' dynamics, moving at the heights of 200 to 1000 km. The usage of these kind of bodies is steadily growing, esp., for the purposes of remote sensing, telecommunications, meteorology, military goals and for the fundamental scientific research of the solid Earth and its neighbourhood. The influence of the upper atmosphere is not negligible and the effects of the non-gravitational forces, primarily of the radiation origin - direct solar radiation pressure, reflected radiation, infrared radiation are equally important when tracking such satellites and forcasting their orbital and rotational motion. To collect the relevant data the best way is to measure the respective tiny dynamical effects by accelerometers. The project MIMOSA was designed especially to meet such demands. A special small satellite will carry the only scientific instrument - a super sensitive microaccelerometer (10-12g) working under the ambient temperature. The satellite is now ready for the launch which should be performed by the EUROCKOT company in April 2003. The principal scientific rationale and technical properties of the satellite and the instrument are described in the paper.

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