 |
|
|
|
| HAL : hal-00401867, version 1 |
| Code Bibliographique ADS : 2009A&A...499..321D |
| DOI : 10.1051/0004-6361/200811509 |
| Fiche détaillée |  Récupérer au format |
|
|
| Astronomy and Astrophysics 499 (2009) 321-330 |
|
|
|
|
| Estimating the accuracy of satellite ephemerides using the bootstrap method |
|
|
| Josselin Desmars 1Sylvain Arlot 2, 3 |
|
|
| (05/2009) |
|
|
|
| Context: The accuracy of predicted orbital positions depends on the quality of the theorical model and of the observations used to fit the model. During the period of observations, this accuracy can be estimated through comparison with observations. Outside this period, the estimation remains difficult. Many methods have been developed for asteroid ephemerides in order to evaluate this accuracy. Aims: This paper introduces a new method to estimate the accuracy of predicted positions at any time, in particular outside the observation period. Methods: This new method is based upon a bootstrap resampling and allows this estimation with minimal assumptions. Results: The method was applied to two of the main Saturnian satellites, Mimas and Titan, and compared with other methods used previously for asteroids. The bootstrap resampling is a robust and practical method for estimating the accuracy of predicted positions. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE) |
|
|
|
CNRS : UMR8028 – INSU – Observatoire de Paris – Université Pierre et Marie Curie [UPMC] - Paris VI – Université Lille I - Sciences et technologies |
|
|
| 2 : | Laboratoire d'informatique de l'école normale supérieure (LIENS) |
|
|
|
CNRS : UMR8548 – Ecole normale supérieure de Paris - ENS Paris |
|
|
| 3 : | WILLOW (INRIA Rocquencourt) |
|
|
|
INRIA – Ecole normale supérieure de Paris - ENS Paris – Ecole des Ponts ParisTech – CNRS : UMR8548 |
|
|
| 4 : | Laboratoire d'Astronomie de Lille (LAL) |
|
|
|
Université Lille I - Sciences et technologies – CNRS : UMR8028 |
|
|
|
|
|
|
|
|
|
| Domaine | : | Mathématiques/Statistiques Statistiques/Théorie Planète et Univers/Astrophysique/Planétologie et astrophysique de la terre Physique/Astrophysique/Planétologie et astrophysique de la terre |
|
|
| planets and satellites: individual: Mimas – planets and satellites: individual: Titan – ephemerides – methods: statistical |
|
| hal-00401867, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00401867 | |
| oai:hal.archives-ouvertes.fr:hal-00401867 | |
| Contributeur : Sylvain Arlot | |
| Soumis le : Lundi 6 Juillet 2009, 11:36:52 | |
| Dernière modification le : Mercredi 20 Avril 2011, 13:32:21 | |
