Estimation of the determination accuracy of orbit parameters of the apophis asteroid from measurement results

Details Estimation of the determination accuracy of orbit parameters of the apophis asteroid from measurement results Estimation of the determination accuracy of orbit parameters of the apophis asteroid from measurement results

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010cosre..48..417b&link_type=abstract

Cosmic Research, Volume 48, Issue 5, pp.417-423

Astronomy and Astrophysics

Astronomy

Scientific paper

An analysis of the existing astrometric and radar observations of the Apophis asteroid is performed. On the basis of this analysis, characteristics of future measurements of the asteroid orbit and limitation on their conduction are accepted. A proposed launching of a spacecraft to the asteroid in order to obtain high-accuracy measurements of its distance and radial velocity is also considered. Trajectories of the flight to the asteroid in 2012-2022 are studied. Estimates of the accuracy of the Apophis position determination at various sets of both available and planned measurements at various numbers of determined parameters are obtained. The method of estimating accuracy is similar to that used in [1] for the Vega project.

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