Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.2306j&link_type=abstract
American Astronomical Society, DPS meeting #39, #23.06; Bulletin of the American Astronomical Society, Vol. 39, p.453
Astronomy and Astrophysics
Astronomy
3
Scientific paper
Jacobson et al. (1992 AJ 103, 2068) determined the orbits of the Uranian satellites and the masses of Uranus and its satellites from Earth-based astrometry and observations acquired with the Voyager spacecraft. French et al. (1988 Icarus 73, 349) determined the orbits of the Uranian rings, the orientation of the Uranian pole, and the gravity harmonics of Uranus from Earth-based and Voyager ring occultations. In this paper we redetermine the gravity parameters, satellite orbits, and ring orbits in a combined analysis of the data used previously augmented with additional Earth-based astrometry. Moreover, we process the observations and determine the orbits and pole in the International Celestial Reference Frame (ICRF) rather than the FK4/B1950 frame used previously. We also utilitize the Voyager trajectory recently reconstructed in the ICRF (Jacobson and Rush, AAS Paper 07-319, 2007 AAS/AIAA Astrodynamics Specialist Conference).
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