===========================                         ===========================
                         INSTITUT DE MECANIQUE CELESTE
                             BUREAU DES LONGITUDES

                          /pub/ephem/planets/series96

                                 1996 December
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planets/series
AUTHORS :  J. Chapront, G. Francou

CONTENTS :

    Planetary series (1900-2100) version 96.

    Planetary motions have been represented with series resulting of an
    approximation by frequency analysis of JPL numerical integration DE403.

    Series represent the heliocentric coordinates of planets as functions of
    time between 1900 and 2100 for the 9 bodies :
    Mercury, Venus, Earth-Moon Barycenter, Mars, Jupiter, Saturn, Uranus,
    Neptune and Pluto.

    The method allows to compute planetary ephemerides with the aid of
    compact tables and keeps accuracy of published ephemerides.
   
    Reference :
    Representation of planetary ephemerides by frequency analysis.
    Chapront J.,  Astron. Astrophys. Suppl. Ser. 109, 181 (1995).
    <Astron. Astrophys. Suppl. Ser. 109, 181 (1995)>
    CDS anonymous ftp : J/A+AS/109/181

AUTHOR'S ADDRESS :

    J. Chapront, G. Francou
    Bureau des Longitudes
    Group : Dynamics of Solar System
    77, avenue Denfert-Rochereau
    F-75014 Paris - France
    E-mail : jchapron@bdl.fr  francou@bdl.fr
    Phone  : (33) 1 40 51 22 71  (33) 1 40 51 22 60
    Fax    : (33) 1 46 33 28 34

DESCRIPTION :

    The presentation of the series is given in file series96.doc.
    The planetary series are in files series96.xxx (one file per planet).

    A Fortran subroutine series96.sub (96.12) uses the series for computing
    the heliocentric rectangular coordinates of planets.
 
    A Fortran program series96.for is provided to illustrate the use of
    the series in the case of the computation of astrometric coordinates.

FILES :

    ---------------------------------------------------------------------------
    FileName      Type     Size   Explanations
    ---------------------------------------------------------------------------
    README         asc            This file
    series96.doc   asc    24 Ko   Notice for the use of the series.
    series96.mer   asc   425 Ko   Mercury
    series96.ven   asc   145 Ko   Venus
    series96.btl   asc   108 Ko   Earth-Moon Barycenter
    series96.mar   asc    96 Ko   Mars
    series96.jup   asc    18 Ko   Jupiter
    series96.sat   asc    16 Ko   Saturn
    series96.ura   asc    12 Ko   Uranus
    series96.nep   asc    12 Ko   Neptune
    series96.plu   asc    12 Ko   Pluto
    series96.sub   asc     6 Ko   Fortran subroutine for the use of the series
    series96.for   asc    18 Ko   Fortran program (astrometric coordinates)
    --------------------------------------------------------------------------- 

(End of document)               
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                               Fax        : (33) 1 46 33 28 34
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