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Contents. planet: 5 - Jupiter satellites: J1 - Io : 4, J2 - Europa : 0, J3 - Ganymede : 8, J4 - Callisto : 4 total number: 26 type: relative 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 : 3, J2 - Europa : 9, J3 - Ganymede : 4, J4 - Callisto : 0. reference frame: astrometric centre of frame: topocentre epoch of equinox: J2000 time scale: TT reduction: from mutual occultations coordinates: X, Y 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 occultations. For usual using of the apparent angular topocentric 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 occulting satellite 2. Np - number of occulted 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) topocentric, arcsec 6. Y" - Delta(delta) topocentric, arcsec 7. R - topocentric distance of occulting satellite, au 8. ta - time of the light start at the occulting satellite (MJD=JD-2400000.5), TT 9. tp - time of the light reflectance at the occulted satellite (MJD=JD-2400000.5), TT 10. X(0) - difference of the planetocentric rectangular coordinates (occulting satellite "minus" occulted one) in the event plane (see reference), km 11. Y(0) - difference of the planetocentric rectangular coordinates (occulting satellite "minus" occulteded 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) ------------------------------------------------------------------------------------------------------------------------------------------------ Na Np OBS MJD X" Y" R, ua ta tp X(0) Y(0) ax ay bx by bz ------------------------------------------------------------------------------------------------------------------------------------------------