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{\bf  OBSERVATION OF THE SOLAR SYSTEM BODIES ON BOARD\protect \\
OF THE FUTURE RUSSIAN ASTROMETRIC SATELLITE}
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V.N.YERSHOV

{\it
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Pulkovo Observatory, \\
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196140 St Petersburg, \\
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Russia \\
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e-mail: yersh@gao.spb.su
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{\bf Abstract}
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A future Russian astrometric satellite {\it Struve} is under design stage
which is aimed at extension of the fundamental coordinate system down to 18-th
magnitude stars. The accuracy of the output catalogue is planned to be
better than 0.6~mas ($V=14$) for positions and parallaxes and 0.2~mas per year
for proper motions (using the first epoch of the Hipparcos program stars).
One of the critical points of the project is linking the obtained
coordinate system to the dynamical reference frame. The problem might be solved
by observations of the Solar System bodies on board of the satellite.
The telescopes of the satellite will be able to detect many of the
Solar System bodies including asteroids  and comets.
Problems of registration and reduction of these observations are discussed.
Results of computer simulatins are presented which show a possibility
of real time recognitions of fast moving objects.
Two types of detectors are discussed as a basic ones for the
on-board telescopes: the CCD's and the microchannel plates.
The former provides wider dynamic range and the latter allows to operate
properly with moving objects. It is recommended both of them to be used
in different focal planes.
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