Observatoire de la Côte d'Azur, BP 4229, 06304 Nice Cedex 4, France e-mail: Pascal.Oberti@obs-nice.fr
2 Institut de mécanique céleste et de calcul des éphémérides, UMR 8028 du CNRS and Université de Lille, 1 impasse de l'Observatoire, 59000 Lille, France e-mail: Alain.Vienne@imcce.fr
Corresponding author: P. Oberti, email@example.com
Accepted: 10 October 2002
A tridimensional model including the perturbation due to Saturn's oblateness provides accurate solutions for the motions of Tethys and Dione's Lagrangian satellites Telesto, Calypso, and Helene. Expanded around the Lagrangian points and compared to numerical simulations to check their reliabilities, the solutions are fitted to almost twenty years of data thanks to recently published observations. User-friendly compact series give Telesto, Calypso, and Helene's positions and velocities in the mean ecliptic and equinox of J2000.
Key words: planets and satellites: individual: Saturn / planets and satellites: general / celestial mechanics
© ESO, 2003