Contents.
      planet: 5 - Jupiter
  satellites: J1 - Io       : 10,
              J3 - Ganymede : 15,
              J4 - Callisto :  6
total number: 31
        type: relative
       dates: 1997-1997
 observatory: see observatories list in the relevant article. 

Reference.
   Emelianov N. V., Vashkovjak S. N. (2009)
   Astrometric results of the observations 
   of the mutual occultations and eclipses 
   of the Galilean satellites of Jupiter in 1997.
   Solar System Research. V. 43. P. 240252.

Informations.
         relative to: reference body is an occulted or eclipsed satellite.
     reference frame: astrometric
     centre of frame: topocenter for mutual occultation
                      or heliocenter for mutual eclipse
    epoch of equinox: J2000
          time scale: UTC
           reduction: from mutual occultations and eclipses
         coordinates: Position angle (topocentric for mutual occultation
                      or heliocentric for mutual eclipse)
    diff. refraction: no information
            receptor: photometric (see the relevant article)
           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 and eclipses made during
     the international campaign in 1997.
     The description of these astrometric data is given 
     in the relevant article (see Reference).
     The apparent relative position of the satellite measured 
     across the apparent trajectory can not be determined accurately enough 
     and therefore position angles can be determined only up to 180 deg (+/- 180 deg).
     The second group of the data is presented in this item.
     The "O-C' are given with respect of the theory by V.Lainey
     (Lainey, V., Arlot, J. E., Vienne, A. 2004, A&A, 427, 371).
     The first group of the data see in the following item jg0025 of the NSDC.
     The coordinates of the observatories can be found in
     (Arlot J.-E., Thuillot W., Ruatti C. and 61 co-autors. A&A, 2006, 451, 733-737) 
     Correspondence between the Observatory code in these data 
     and the observatory name in the paper (Arlot et al, 2006) is following
     (for some observatories the IAU codes or the coordinates are given):
 ASH ASHEVILLE 
 BAR BARCELONA  
 BOO WILP-ACHTERHOEKE
 BOR BORDEAUX
 BOU REUX
 BOW BOWIE
 BRU UCCLE
 BUC BUCAREST
 BUL BOSKOOP
 BUV BUCAREST
 CAC CACERES
 CAT CATANE -T91
 CAU CATANE -T20
 CHA Chateaugiron
 CIR TENERIFE 
 COM COMTHUREY
 CRE NAUCHNY      
 CRI NAUCHNY      
 ELL ELLINBANK
 ESO ESO
 ESS ESSEN
 GON LISBOA
 GRB CALERN
 GRR CALERN
 GRV CALERN
 KAZ ALMA-ATA   
 KIE IAU-083 (Golosseevo-Kiev)
 KOU IAU-168 (Kourovskaya)
 LUM LUMEZZANE
 MAD MADRID
 MEU MEUDON
 MIL MILAN
 MUN MUNCHEN
 NEW NEW-YORK
 ODE Dushak-Erekdag: Longitude (East): 03 h 51 m 36 s, latitude (North): 37 deg 56' 
 OHP OHP
 PAR PARIS
 PIC PIC-DU-MIDI
 PRA PRAHA
 PUL IAU-084 (Pulkovo)
 SAR ZARAGOZA
 SEV SEVILLA
 SFF SAN FERNANDO
 SIC RAGUSA
 STU STUTTGART
 TEI TENERIFE              
 TOK FUNAHO
 TOL OKAYAMA 
 TOP TOPEKA
 TUR TORINO
 VAN OOSTDUINKERKE
 VAS KAVALUR
 VOR Voronezh: Longitude (East): 03 h 36 m 00 s, latitude (North): 51 deg 40'
         
Format.
  1. Year of observation
  2. Month of observation
  3. Day of observation
  4. The type of the phenomenon (eclipse or occultation) including the
     satellite numbers. The type of phenomenon is coded as n_a o n_p 
     or n_a e n_p for a mutual occultation or eclipse, respectively.
     Here n_a is the number of the occulting or eclipsing satellite 
     and n_p is the number of the occulted or eclipsed satellite.
  5. Observatory code (see the table in the relevant article).
  6. Hour of the astrometric data (UTC)
  7. Minute of the astrometric data (UTC)
  8. Seconde of the astrometric data with decimals (UTC)
  9. Position angle A in degrees (topocentric for mutual occultation
                                or heliocentric for mutual eclipse)
 10. Precision of apparent position along the apparent relative trajectory 
     of the satellite as obtained with the least-square method, in arcseconds
 11. Flag R assigned showing the reason why only one coordinate was determined: 
     0 for a total mutual eclipse or occultation observed, 
     1 for the results obtained from poor photometric data

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Year        Observatory         Position   sigma    
   month       code             angle A             R
      date Type     h  m  s      deg       arcsec   
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