Orbit determination of the Lunar Prospector spacecraft performed at the Jet Propulsion Laboratory was conducted as part of the lunar gravity experiment. The orbit determination was performed using S-band two-way Doppler and range data from the Deep Space Netwrok stations with near continuous tracking. A description of the mission and its orbit will be provided, followed by a discussion of the orbit determination estimation procedure and models. Accuracies will be examined in terms of orbit-to-orbit solution differences for several recent gravity models. The orbit determination accuracies for the latest 100th degree gravity model (LP100J) are better than one meter radially for the nominal mission but are substantially higher for the lower altitude orbits of the extended mission.
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