Contents.
      planet: 9 - Pluto
  satellites: 1 - P1 Charon : 56
total number: 56
        type: relative
       dates: 1984-1985
 observatory: 568 - Mauna Kea

References.
    Beletic, J. W.; Goody, R. M.; Tholen, D. J. (1989).
    Orbital elements of Charon from speckle interferometry.
    Icarus, Volume 79, Issue 1, p. 38-46.
    1989Icar___79___38B

Informations.
         relative to: planet
     reference frame: astrometric
     centre of frame: topocentre
    epoch of equinox: 1950.0
          time scale: UT
           reduction: no information
         coordinates: differential X, Y relative to Pluto
    diff. refraction: no information
            receptor: CCD
           telescope: 1 - University of Hawaii 2.24-m telescope
                      2 - United Kingdom Infrared Telescope (3.8 m)
           observers: Beletic, J. W.; Goody, R. M.; Tholen, D. J.

 data included in standard data file: no

Comments.

Format.
  1. Year of the date of observation
  2. Month of the date of observation
  3. Day of the date of observation
  4. Hour of the date of observation
  5. Minutes of the date of observation
  6. X, arcsec
  7. Y, arcsec
  8. Telescope (T: 1 - 2.24 m, 2 - 3.8 m)

-----------------------------------
Year    Day   Min   X       Y     T
  Month    Hour   arcsec  arcsec
-----------------------------------