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              Institut de mécanique céleste et de calcul des éphémérides 

		   	     /pub/ephem/satel/posxy/lowprec

                                April, 2006
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satel/posxy/lowprec

              Low precision ephemerides of the main planetary satellites:
              tangential relative positions of the main satellites of Mars,
              Jupiter,Saturn, Uranus, given under the form of developments
              in mixed functions.

                  
AUTHORS :     J.-E. Arlot, Ch. Ruatti, D.T. Vu and W. Thuillot


ADDRESS :     IMCCE - UMR 8028
              77 av. Denfert Rochereau, F-75014 PARIS
              Phone: (1) 40 51 22 67  / (1) 40 51 22 65  
              Fax:   (1) 46 33 28 34 
              e-mail:arlot@imcce.fr, ruatti@imcce.fr, thuillot@imcce.fr

CONTENTS:     The files of this directory allow to compute the differential
              coordinates of the main natural satellites with a precision of 
              0.5 arcsec for the period 1997-2020. 

              Beware: The files of this subdirectory have to be used 
              following the explanations given in the directory posxy, 
              see it for further explanations.


  seqdir.f :  This Fortran code source has to be compiled in order to allow 
              you to convert the ascii sequential files mars.xxxx, jupiter.xxxx, 
              saturne.xxxx, uranus.xxxx (where xxxx is the year) 
              into direct access files to be used by ephang.

  diffpos.f : This Fortran program code source has to be compiled in order to 
              allow you to compute the differential coordinates of the 
              satellites by using the direct access files.


  mars.xxxx     |  sequential files of coefficients for the year xxxx
  jupiter.xxxx  |  (between 1997 and 2020)
  saturne.xxxx  |
  uranus.xxxx   |

 
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User feed-back is encouraged. Unless otherwise specified, send comments and bug 
reports to:                    E-mail     : comments@imcce.fr
                               Fax        : (33) 1 46 33 28 34 
                               Postal mail: IMCCE/observatoire de Paris
                                            77 avenue Denfert Rochereau
                                            F-75014 PARIS
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