A new determination of lunar orbital parameters, precession constant and tidal acceleration from LLR measurements

  title={A new determination of lunar orbital parameters, precession constant and tidal acceleration from LLR measurements},
  author={Jean Chapront and Michelle Chapront-Touz{\'e} and G. Francou},
  journal={Astronomy and Astrophysics},
An analysis of Lunar Laser Ranging (LLR) observations from January 1972 until April 2001 has been performed, and a new solution for the lunar orbital motion and librations has been constructed that has been named S2001. With respect to prior solutions, improvements in the statistical treatment of the data, new nutation and libration models and the addition of the positions of the observing stations to the list of fitted parameters have been introduced. Globally, for recent observations, our rms… 
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