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VI/87               Planetary Ephemerides     (Chapront+ 1996)
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Ephemerides of planets between 1900 and 2100 (1998 update)
     Chapront J., Francou G.
    <Bureau des Longitudes, Group : Dynamics of Solar System (1996)>
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ADC_Keywords: Ephemerides ; Planets
Keywords: planets - ephemerides - celestial mechanics

Description:

      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.

Authors' Addresses:

      J. Chapront,
      Observatoire de Paris
      DANOF
      61, avenue de l'Observatoire - F75014 PARIS
      E-mail : jchapron@danof.obspm.fr

      G. Francou,
      Observatoire de Paris
      Institut de mecanique celeste et de calcul des ephemerides
      77, avenue Denfert-Rochereau - F75014 PARIS
      E-mail : francou@bdl.fr


Contents:

      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.f is provided to illustrate the use of the
      series in the case of the computation of astrometric coordinates.

      An executable DOS program, planeph.exe, allows to compute the
      most usual planetary ephemerides with the series between 1900
      to 2100. The file planeph.doc gives explanations for using
      this program with the data sets planeph.tab and planeph.loc.


File Summary:
--------------------------------------------------------------------------------
 FileName    Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
series96.doc    79        522    Notice for the use of the series.
series96.mer    39      14764    Series values for Mercury
series96.ven    39       5077    Series values for Venus
series96.emb    39       3810    Series values for Earth-Moon barycenter
series96.mar    39       3378    Series values for Mars
series96.jup    39        662    Series values for Jupiter
series96.sat    39        578    Series values for Saturn
series96.ura    39        438    Series values for Uranus
series96.nep    39        422    Series values for Neptune
series96.plu    39        442    Series values for Pluto
series96.sub    72        271    Fortran77 subroutine for the use of the series
series96.f      72        620    Fortran77 program (astrometric coordinates)
planeph.doc    129        750    Notice for the use of the program planeph.exe
planeph.exe    512        680   *Executable program (DOS), version 4.2
planeph.loc    512       1841   *Locations coordinates (used by planeph.exe)
planeph.tab    512        945   *Planetary tables (used by planeph.exe)
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Note on planeph.exe, planeph.loc, planeph.tab:
     These are binary files which can be used only on DOS systems.
     They must be copied in BINARY mode !
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See also:
    VI/66 : Precession Formulae and Mean Elements for Moon and Planets
            (Simon et al., 1994)
    VI/79 : Lunar Solution ELP 2000-82B (Chapront-Touze+, 1988)
    VI/81 : Planetary Solutions VSOP87 (Bretagnon+, 1988)
    VI/88 : Ephemerides of Pluto based on DE200   (Chapront+ 1995)
    J/A+AS/109/181 : Ephemerides of outer planets (Chapront 1995)

History:
  * 28-Jan-1997: first version
  * 07-Oct-1998: installation of 1998 update, replacement of the
    planeph.exe by the newer version (4.2). No change occured in
    the data files.

References:
  Bretagnon P., Francou G., 1988, A&A 202, 309 (1988A&A...202..309B)
  Chapront J., 1995, A&AS 109, 181  (1995A&AS..109..181C)
  Simon J.L., Bretagnon P., Chapront J., Chapront-Touze M., Francou G.,
    Laskar J., 1994, A&A 282, 663 (1994A&A...282..663S)
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(End)                      G. Francou [BDL], F. Ochsenbein [CDS]     07-Oct-1998