Contents.
      planet: 9 - Pluto
  satellites: P1-Charon  : 60
total number: 60
        type: relative
       dates: 1992-1993
 observatory: 250 - Hubble Space Telescope

Reference.
   Tholen D. J., Buie M. W. (1997)
   The Orbit of Charon.
   Icarus. V. 125. N. 2. P. 245-260.
   1997Icar__125__245T

Informations.
         relative to: planet
     reference frame: astrometric
     centre of frame: topocentre
    epoch of equinox: J2000
          time scale: TDT
           reduction: see reference
         coordinates: Separation, Position angle
    diff. refraction: no information
            receptor: CCD
           telescope: HST
           observers: Tholen D. J., Buie M. W.
 data included in standard data file: no

Comments.
          no information

Format.
  1. Exposure midtime (JDT)
  2. Separation, arcsec
  3. Position angle, degrees
  4. Residuals in Separation, arcsec
  5. Residuals in Position angle, degrees

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                                        Residuals 
 Exposure         Sep.      P.A.      Sep.     P.A.
 midtime (JDT)    arcsec  degrees    arcsec degrees
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