The gravity field, orientation, and ephemeris of Mercury from MESSENGER observations after three years in orbit

@article{Mazarico2014TheGF,
  title={The gravity field, orientation, and ephemeris of Mercury from MESSENGER observations after three years in orbit},
  author={Erwan M. Mazarico and Antonio Genova and Sander Goossens and Frank LeMoine and Gregory A. Neumann and Maria T. Zuber and David E. Smith and Sean C. Solomon},
  journal={Journal of Geophysical Research: Planets},
  year={2014},
  volume={119},
  pages={2417 - 2436}
}
We have analyzed 3 years of radio tracking data from the MESSENGER spacecraft in orbit around Mercury and determined the gravity field, planetary orientation, and ephemeris of the innermost planet. With improvements in spatial coverage, force modeling, and data weighting, we refined an earlier global gravity field both in quality and resolution, and we present here a spherical harmonic solution to degree and order 50. In this field, termed HgM005, uncertainties in low‐degree coefficients are… 

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