Lagrangian satellites of Tethys and Dione. I - Reduction of observations

Details Lagrangian satellites of Tethys and Dione. I - Reduction of observations Lagrangian satellites of Tethys and Dione. I - Reduction of observations

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...80..289o&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 80, no. 3, Nov. 1989, p. 289-297.

Astronomy and Astrophysics

Astrophysics

8

Dione, Orbital Mechanics, Saturn (Planet), Tethys, Lagrangian Equilibrium Points, Telescopes

Scientific paper

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.

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