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VI/66  Precession Formulae and Mean Elements for Moon and Planets (Simon+ 1994)
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Numerical expressions for precession formulae and mean elements
for the Moon and the planets.
    Simon J.L., Bretagnon P., Chapront J., Chapront-Touze M.,
    Francou G., Laskar J.
    <Astron. Astrophys. 282, 663 (1994)>
    =1994A&A...282..663S
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ADC_Keywords: Solar system ; Ephemerides
Keywords: celestial mechanics - planets and satellites: general - Moon

Description:
    The files given here refer to the paper A&A 282, 663 (1994) which
       concerns the following topics:
       - numerical expressions for the precession quantities,
       - mean elements for Moon and planets, from Mercury to Neptune,
       - formulae for computing approximate ephemerides for Moon
         and planets.
    The files concern only precession and approximate ephemerides of
       the planets.
    The numerical expressions of precession are yielded by files :
       prctable.doc, prcbdl94.f, prcupdt.f.
    The formulae for computing approximate ephemerides of the planets
       are available in file : planetap.f.
    There is no file for the mean elements of Moon and planets because
       these quantities are of a more specific use.
    Approximate lunar ephemerides may be computed from tables in:
       Chapront-Touze M., Chapront J. (1991)
       "Lunar Tables and Programs from 4000 B.C. to A.D. 8000"
       Willmann-Bell, Inc., Richmond, Virginia, USA.

File Summary:
-------------------------------------------------------------------------------
 FileName        Lrecl     Records      Explanations
-------------------------------------------------------------------------------
ReadMe              80           .      This file.
prctable.doc        80         146      Table of precession quantities BDL94.
prcbdl94.for        80         268     *Fortran77 code : compute precession
                                         quantities with formulae BDL94.
prcupdt.for         80         467     *Fortran77 code : improve the numerical
                                         expressions of precession BDL94 with new
                                         values for general precession, obliquity
                                         and ratios Sun mass / planet mass.
planetap.for        80         463     *Fortran77 code : compute approximate
                                         ephemerides of the 8 major planets.
-------------------------------------------------------------------------------
Note on *.for files:
    Fortran77 code contains a subroutine with comments for usage
    and a short program showing how the subroutine is called on Unix
    workstations; for usage in a DOS 5.0 environment, just replace the
    "C" in col.1 by a blank in a few lines for better screen management.

Authors' Address:
    Bureau des Longitudes, URA 707.
    77, Avenue Denfert-Rochereau
    75014, Paris, France.

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(End)                                                        [BDL]  12-May-1994