Contents.
      planet: 7 - Uranus
  satellites: U1-Ariel     :333,
              U2-Umbriel   :333,
              U3-Titania   :333,
              U5-Miranda   :288
total number: 1287
        type: relative
       dates: 1983-1988
 observatory: 874 - Itajuba (Laboratorio Nacional de Astrofisica)

Reference.
   Veiga, C. H.; Vieira Martins, R. (1994)
   Positions of Uranian satellites.
   Astron. Astrophys. Suppl. V. 107, p. 559-561.
   1994A&AS__107__559V
   Veiga, C. H.; Vieira Martins, R. (1994)
   A method to define a reference system for the reduction of astrometric
   positions of natural satellites.
   Astron. Astrophys. Suppl. V. 107, p. 551-558.
   1994A&AS__107__551V

Informations.
         relative to: U4-Oberon : 1287
     reference frame: astrometric
     centre of frame: topocentre
    epoch of equinox: B1950
          time scale: UTC
           reduction: no information
         coordinates: X, Y
    diff. refraction: no information
            receptor: photographic
           telescope: Reflector, D = 1.6 m
           observers: Veiga C.H., Vieira Martins R.
 data included in standard data file: no

Comments.
 These positions were reduced using photometric
 methods and compared with those calculated theoretically calculated from
 GUST86. The observed minus calculated residuals referred to Oberon, have
 standard deviations of the order of 0".04 for the four greatest Uranian
 satellites and 0".09 for Miranda. These residuals for the four
 satellites are better than the most precise found in the literature.

Format.
  1. The number of the plate
  2. Year   of the moment of observation
  3. Month  of the moment of observation
  4. Day    of the moment of observation with decimals
  5. X, arcsec, for U5-Miranda (999.99 - the data are absent)
  6. Y, arcsec, for U5-Miranda (999.99 - the data are absent) 
  7. X, arcsec, for U1-Ariel   (999.99 - the data are absent) 
  8. Y, arcsec, for U1-Ariel   (999.99 - the data are absent) 
  9. X, arcsec, for U2-Umbriel (999.99 - the data are absent) 
 10. Y, arcsec, for U2-Umbriel (999.99 - the data are absent) 
 11. X, arcsec, for U3-Titania (999.99 - the data are absent) 
 12. Y, arcsec, for U3-Titania (999.99 - the data are absent) 

--------------------------------------------------------------------------------
Number Year      UT      X     Y        X     Y        X     Y        X     Y
ofthe   month day       U5-Miranda     U1-Ariel       U2-Umbriel     U3-Titania
plate     with decimals  arcsec         arcsec         arcsec         arcsec
--------------------------------------------------------------------------------