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Statistical analysis on the uncertainty of asteroid ephemerides

Abstract : The large number of asteroids allows a statistical analysis especially for their orbital uncertainty. It presents a particular interest for Near-Earth asteroids in order to estimate their close approach from Earth and eventually their risk of collision. Using ASTORB and MPCORB databases, we analyse the different uncertainty parameters (CEU, U) and highlight relations between the uncertainty parameter and the characteristics of the asteroid (orbital arc, absolute magnitude, ...).
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Submitted on : Friday, December 2, 2011 - 1:59:36 PM
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Josselin Desmars, David Bancelin, Daniel Hestroffer, William Thuillot. Statistical analysis on the uncertainty of asteroid ephemerides. SF2A 2011: Annual meeting of the French Society of Astronomy and Astrophysics, Jun 2011, Paris, France. pp. 639-642. ⟨hal-00647644⟩



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