Determination of Nutation Coefficients from Lunar Laser Ranging

  • L. BiskupekEmail author
  • J. Müller
  • F. Hofmann
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 136)


It was just July 20, 1969 when the first retro-reflector for Lunar Laser Ranging (LLR) was deployed on the Moon by the Apollo 11 crew. From this day on, LLR is carried out to measure the distance between Earth and Moon. The complete set of observations is analysed and various parameters of the Earth–Moon system are determined by least-squares adjustment. Because of the long time span of data, long-term lunisolar nutation coefficients of the 18.6-year period (and the precession rate) can be determined well. But also other periods (182.62-day, 9.3-year, 365.26-day) can be fitted. The nutation coefficients were determined from LLR based on the models for precession and nutation according to the IAU Resolution 2006 and compared to the MHB2000 model of Mathews et al. (2002). In this paper, the corresponding preliminary results are discussed.


Earth Orientation Parameter Moon System Lunar Laser Range Precession Rate Nutation Angle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Current LLR data are collected, archived and distributed under the auspices of the International Laser Ranging Service (ILRS) (Pearlman et al. 2002). We acknowledge with thanks, that the more than 38 years of LLR data, used in these analyses, have been obtained under the efforts of personnel at the Observatoire de la Cote d’Azur in France, the LURE Observatory in Maui, Hawaii, the McDonald Observatory in Texas as well as the Apache Point Observatory (APOLLO) in New Mexico.

We would also like to thank the DFG, the German Research Foundation, which funded this study within the research unit FOR584 “Earth rotation and global dynamic processes”.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Institut für ErdmessungLeibniz Universität HannoverHannoverGermany

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