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Very Long Baseline Array Astrometric Observations of the Cassini Spacecraft at Saturn

Jacobson, Robert A.; Jones, Dayton L.; Dhawan, Vivek +5 more

The planetary ephemeris is an essential tool for interplanetary spacecraft navigation, studies of solar system dynamics (including, for example, barycenter corrections for pulsar timing ephemerides), the prediction of occultations, and tests of general relativity. We are carrying out a series of astrometric very long baseline interferometry observ…