GUST86 - an analytical ephemeris of the Uranian satellites

The General Uranus Satellite Theory GUST (Laskar, 1986) is used for the construction of an analytical ephemeris for the Uranian satellites. The theory is fitted against Earth-based observations from 1911 to 1986 and all radio and optical data obtained during Voyager encounter with Uranus. Earth-based observations alone allow the determination of masses which are within 15% of the values determined by the Uranus flyby. The analysis of all the observations confirms the values of the masses obtained during the encounter (Stone and Miner, 1986) and gives a complete set of dynamical parameters for the analytical theory. The authors obtain an analytical ephemeris, GUST 86, with an estimated precision of about 100 km with respect to Uranus.