Contents.
      planet: 5 - Jupiter
  satellites: J2 - Europa   :  2
total number: 2
        type: relative
       dates: 2014-2015
 observatory: see observatories coordinates below.

Reference.
Emel'yanov N.V., Arlot J.-E., Zhang X.L., Bradshaw J., De Cat P., Han X. L., Ivantsov A.,
Jindra J., Maigurova N., Manek J., Pauwels T., Pomazan A., Vingerhoets  P.
Astrometric Results for Observations of Jupiter's Galilean Satellites
During Mutual Occultations and Eclipses in 2009 and 2014-2015.
Solar System Research. 2019. V. 53. No. 6. P. 436-442.
2020SoSyR__53__436E 

Informations.
         relative to: reference body is an occulted or eclipsed satellite:
                      J1 - Io       : 2
     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 2014-2015. 
     The description of these astrometric data and
     are given in the relevant article (see Reference).
     The coordinates of the observatories are given below.
     The first 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., Karatekin, O., van Hoolst, T. 2009. 
     Nature. V. 459. P 957.)
     This is the second group of the data 
     The first one see in the item jg0057 of the NSDC.
         
Observatory code with geographic coordinates or IAU code
and telescope parameters. 

      Longitude   Latitude   Altitude Telescope      Observatory    Country
      to the East to the N/S meters   type Diameter  name                          IAU code 
Code  deg ' ''    deg ' ''                       cm                                if available
-----------------------------------------------------------------------------------------------
YU6  102 47  0 E  25  2  0 N  2014    Reflector  60  Yunnan         China 
KPO                                   SARA       90  Kitt Peak      USA            G82

Format.
  1. Observatory code (see the table in the relevant article).
  2. 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.
  3. Year of observation
  4. Month of observation
  5. Day of observation
  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. O-C along the apparent relative trajectory, in arcseconds.
 12. 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 doubtful photometric data

------------------------------------------------------------
Observ. Year                   Position     sigma    
code        month    UTC        angle A             O-C    R
    Type      date  h  m  s     deg         arcsec  arcsec 
------------------------------------------------------------