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Analysis of the Improved Lunar Part of the EPM Ephemerides

Transactions of IAA RAS, issue 43, 104–112 (2017)

Keywords: lunar laser ranging, lunar ephemeris, lunar rotational model, geodynamic models, Universal time

Abstract

The improved lunar ephemeris which is developed as a part of The Fundamental Ephemerides of Planets and the Moon (EPM) is analyzed. The ephemeris is based on the equations accepted originally in the JPL DE430 and modern lunar laser ranging (LLR) observations. Different treatments of geopotential variations, ocean and atmospheric loading are compared in this work. The model of orbital-rotational motion of the Moon does not only include physical equations, but also the additional libration in longitude, modified coefficients of the lunar gravitational potential and other non-modelled effects. Nevertheless, some systematic effects found in the residual differences indicate that the models of orbital-rotational motion of the Moon and the Earth can be improved. We have studied the efficiency of the lunar rotation parameters and Universal time determined from the LLR observations. The EPM and DE430 ephemerides are compared.

Citation

Text

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D. A. Pavlov, E. I. Yagudina. Analysis of the Improved Lunar Part of the EPM Ephemerides // Transactions of IAA RAS. — 2017. — Issue 43. — P. 104–112.

@article{pavlov2017,
  abstract = {The improved lunar ephemeris which is developed as a part of The Fundamental Ephemerides of Planets and the Moon (EPM) is analyzed. The ephemeris is based on the equations accepted originally in the JPL DE430 and modern lunar laser ranging (LLR) observations. Different treatments of geopotential variations, ocean and atmospheric loading are compared in this work.
The model of orbital-rotational motion of the Moon does not only include physical equations, but also the additional libration in longitude, modified coefficients of the lunar gravitational potential and other non-modelled effects. Nevertheless, some systematic effects found in the residual differences indicate that the models of orbital-rotational motion of the Moon and the Earth can be improved.
We have studied the efficiency of the lunar rotation parameters and Universal time determined from the LLR observations. The EPM and DE430 ephemerides are compared.},
  author = {D.~A. Pavlov and E.~I. Yagudina},
  issue = {43},
  journal = {Transactions of IAA RAS},
  keyword = {lunar laser ranging, lunar ephemeris, lunar rotational model, geodynamic models, Universal time},
  pages = {104--112},
  title = {Analysis of the Improved Lunar Part of the EPM Ephemerides},
  url = {http://iaaras.ru/en/library/paper/1770/},
  year = {2017}
}

TY  - JOUR
TI  - Analysis of the Improved Lunar Part of the EPM Ephemerides
AU  - Pavlov, D. A.
AU  - Yagudina, E. I.
PY  - 2017
T2  - Transactions of IAA RAS
IS  - 43
SP  - 104
AB  - The improved lunar ephemeris which is developed as a part of The
Fundamental Ephemerides of Planets and the Moon (EPM) is analyzed.
The ephemeris is based on the equations accepted originally in the
JPL DE430 and modern lunar laser ranging (LLR) observations.
Different treatments of geopotential variations, ocean and
atmospheric loading are compared in this work.  The model of orbital-
rotational motion of the Moon does not only include physical
equations, but also the additional libration in longitude, modified
coefficients of the lunar gravitational potential and other non-
modelled effects. Nevertheless, some systematic effects found in the
residual differences indicate that the models of orbital-rotational
motion of the Moon and the Earth can be improved.  We have studied
the efficiency of the lunar rotation parameters and Universal time
determined from the LLR observations. The EPM and DE430 ephemerides
are compared.
UR  - http://iaaras.ru/en/library/paper/1770/
ER  -