Contents.
      planet: 5 - Jupiter
  satellites: J1 - Io       : 8,
              J2 - Europa   : 0,
              J3 - Ganymede :11,
              J4 - Callisto : 7
total number: 26
        type: relative (heliocentric)
       dates: 1997-1997
 observatory: 210 - Alma-Ata
              168 - Kourovskaya
              083 - Golosseevo-Kiev
              084 - Pulkovo
              095 - Crimea-Nauchnij
              K01 - Dushak-Erekdag (see comments)
              K02 - Voronezh  (see comments)

Reference.
   Emelianov N. V., Berejnoi A. A., Vashkovjak S. N., Glushkova E. A., 
   Gorda S. Yu., Delets A., Dorokhova T. N., Dorokhov N. I., 
   Esipov V. F., Izmailov I. S., Irsmambetova T. R., Kiselev A. A., 
   Kiseleva T. P., Kornilov V. G., Kucherov V., Ledovskaya I., 
   Mukhamednazarov S., Raskhozhev V. N., Tejfel V. G., 
   Charitonova G. A. (2000)
   Mutual positions of the Galilean satellites of Jupiter 
   from photometric observations during their mutual occultations 
   and eclipses in 1997.
   Astronomy and Astrophysics Supplement. V. 141. P. 433-447.
   2000A&AS__141__433E

Informations.
         relative to: relative, J1 - Io : 6, J2 - Europa : 10, 
                      J3 - Ganymede : 5, J4 - Callisto : 5.
     reference frame: astrometric
     centre of frame: heliocentre
    epoch of equinox: J2000
          time scale: TT
           reduction: from mutual eclipses
         coordinates: X, Y (heliocentric)
    diff. refraction: no information
            receptor: photometric
           telescope: See in the publication
           observers: See in the publication
 data included in standard data file: no

Comments.
     Data are deduced from the photometric observations
     of the mutual eclipses.
     For usual using of the apparent angular heliocentric 
     coordinates X, Y the data in the columns 1 to 6 are sufficient.
     Other data are needed for the application of the observational 
     results in the planetocentric coordinate system as explaned
     in the publication (see reference).
     The observatory codes K01, K02 are prelinary as these observatory
     are not mentionned in the MPC list. The coordinates of these
     oservatiries are following (MPC standard):
     K01  57.885  0.78881 +0.61463 Dushak-Erekdag
     K02  39.200  0.62068 +0.78407 Voronezh
         
Format.
  1. Na - number of eclipsing satellite
  2. Np - number of eclipsed satellite
  3. OBS - number of observatory (from Minor Planet Center)
  4. MJD - time of topocentric observation (MJD=JD-2400000.5), TT
  5. X" - Delta(alpha)*cos(delta) heliocentric, arcsec 
  6. Y" - Delta(delta) heliocentric, arcsec 
  7. R - heliocentric distance of eclipsing satellite, au
  8. ta -  time of the light start at the eclipsing satellite (MJD=JD-2400000.5), TT
  9. tp -  time of the light reflectance at the eclipsed satellite (MJD=JD-2400000.5), TT
 10. X(0) - difference of the planetocentric rectangular coordinates 
            (eclipsing satellite "minus" eclipsed one) 
            in the event plane (see reference), km
 11. Y(0) - difference of the planetocentric rectangular coordinates 
            (eclipsing satellite "minus" eclipsed one) 
            in the event plane (see reference), km
 12. ax - the coefficient required for application of the coordinates X(0), Y(0) (see reference) 
 13. ay - the coefficient required for application of the coordinates X(0), Y(0) (see reference)
 14. bx - the coefficient required for application of the coordinates X(0), Y(0) (see reference)
 15. by - the coefficient required for application of the coordinates X(0), Y(0) (see reference)
 16. bz - the coefficient required for application of the coordinates X(0), Y(0) (see reference)

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Na
  Np
    OBS   MJD          X"       Y"       R, ua           ta            tp          X(0)   Y(0)  ax        ay        bx        by        bz
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