Authors: Oberti P., Veillet C., and Catullo V.
Year: 1989
Title: Lagrangian satellites of Tethys and Dione. I - Reduction of observations
Journal: Astronomy and Astrophysics Supplement Series
Volume: 80
Number: 3
Pages: 289-297
Keywords: Saturn, faint, observation, data, analysis, position, photographic
Abstract: Observations of Saturn between April 1981 and July 1985 are used to study the faint Lagrangian satellites of Tethys and Dione: Telesto, Calypso, and Helen. The observations are reduced and about 270 positions and angular separations with Tethys or Dione are derived from the observations. A libration amplitude of about 15 deg for Helen, less than 5 deg for Telesto, and less than 10 deg for Calypso. The results make it doubtful that Calypso has a horseshoe-shape orbit. Observatory: ESO, La Silla, Chile. Observer: Veiilet C. Telescope: 1.54 m Danish reflector. Receiver: photographic. Period: Apr 1981 - Jul 1985. Satellites: Telesto, Calypso, and Helen.
%F: AC(Cote d'Azur, Observatoire, Grasse, France)
Bibliogaphic Code: 1989A%26AS...80..289O
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