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Asteroid close encounters characterization using differential algebra: The case of Apophis

Armellin, R, Di Lizia, P, Bernelli-Zazzera, F and Berz, M (2010) Asteroid close encounters characterization using differential algebra: The case of Apophis Celestial Mechanics and Dynamical Astronomy, 107 (4). pp. 451-470.

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A method for the nonlinear propagation of uncertainties in Celestial Mechanics based on differential algebra is presented. The arbitrary order Taylor expansion of the flow of ordinary differential equations with respect to the initial condition delivered by differential algebra is exploited to implement an accurate and computationally efficient Monte Carlo algorithm, in which thousands of pointwise integrations are substituted by polynomial evaluations. The algorithm is applied to study the close encounter of asteroid Apophis with our planet in 2029. To this aim, we first compute the high order Taylor expansion of Apophis' close encounter distance from the Earth by means of map inversion and composition; then we run the proposed Monte Carlo algorithm to perform the statistical analysis.

Item Type: Article
Subjects : Electronic Engineering
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Armellin, R
Di Lizia, P
Bernelli-Zazzera, F
Berz, M
Date : 15 June 2010
DOI : 10.1007/s10569-010-9283-5
Copyright Disclaimer : © 2010 Springer Science+Business Media B.V
Uncontrolled Keywords : Uncertainties propagation, Monte Carlo simulation, Apophis close encounter, Differential algebra
Depositing User : Symplectic Elements
Date Deposited : 30 Nov 2016 10:58
Last Modified : 31 Oct 2017 18:58

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