Contents.

            asteroid: (136199)Eris  
          satellites: Dysnomia   
        total number: 12
                type: position
               dates: 2007-2018
         observatory: 250 - Hubble Space Telescope  

Reference.
Holler B.J., Grundy W.M., Buie M.W. Noll K.S.
The Eris/Dysnomia system I: The orbit of Dysnomia.
Icarus. Vol. 355. Id 114130 (2021)
2021Icar..35514130H

Informations.
         relative to: the primary
     reference frame: astrometric ICRF
     centre of frame: topocentric
    epoch of equinox: J2000
          time scale: UT
           reduction: no information
         coordinates: X, Y (secondary relative to primary)
            receptor: 
           telescope: WFPC2/PC1, WFC3/UVIS

Comments.
  Observations made in 2015 are revisions of observations given in abin0137

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 with decimals
  5. Relative right ascension (X, mas)
  6. Uncertainty in X (errX, mas)
  7. Relative declination (Y, mas)
  8. Uncertainty in Y (errY, mas)

-----------------------------------------------
Year    Day Hour       X     errX    Y     errY
     Month            mas    mas    mas    mas
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