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{\Large \bf Relativistic rotational effects:} \\
{\large \bf application to the Earth-Moon system}
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David Vokrouhlick\'y \\
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{\it Observatoire de la C\^ote d'Azur, Dept. CERGA, Grasse}
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\noindent{\bf Abstract.}\hspace{2mm} Relativistic precession
and nutation phenomena of the terrestrial and lunar reference
systems are discussed. Apart of the effects common to the
two frames (including the well-known geodetic precession), both
of them are submitted to the individual phenomena. Supplemental 
precession of the lunar reference frame of the order of $28.9\,
{\rm mas/cy}$ is theoretically within the scope of the LLR
technology of the forthcoming years. Its secular character, however,
does not allow to decorrelate it easily from other phenomenologically
modeled effects. A fine tuning between the geodetic and Lense-Thirring
effects results in cancelling of several potentially interesting
nutations of the lunar frame. Detailed analysis shows, that newly
proposed value of the `geodetic precession constant' includes 
a part of the Lense-Thirring terms but neglects another one.
Interestingly, the omitted Lense-Thirring part is of the same
magnitude but opposite sign as the added terms, which may lead
to inconvenient interpretations.
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\noindent{\it Submitted as a brief communication to the IAU
 Symposium No.~172, Paris, July 1995}
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\noindent postal address: D.V., OCA/CERGA, Av N Copernic, F-06130
 Grasse, France
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\noindent e-mail: david at ocar01.obs-azur.fr

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