Contents.
      planet: 7 - Uranus
  satellites: U1-Ariel     :368,
              U2-Umbriel   :368,
              U3-Titania   :368,
              U5-Miranda   :368
total number: 1472
        type: relative
       dates: 1989-1994
 observatory: 874 - Itajuba (Laboratorio Nacional de Astrofisica)

Reference.
   Veiga C.H., Vieira Martins R. (1995)
   CCD astrometric observations of Uranian satellites.
   Astronomy and Astrophysics Supplement. V. 113. P. 557-560.
   1995A&AS__113__557V

Informations.
         relative to: U4 - Oberon : 1472
     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: CCD
           telescope: Reflector, D = 1.6 m
           observers: Veiga C.H., Vieira Martins R.
 data included in standard data file: no

Comments.
 These positions were
 measured on 368 CCD frames obtained at the Cassegrain focus of a 1.6-m
 reflector. They are compared with the theoretically calculated
 positions from GUST86 (Laskar & Jacobson 1987). The observed minus
 calculated residuals referred to Oberon have standard deviations of
 the order of 0.05" for the three greatest Uranian satellites and 0.07"
 for Miranda. These residuals are comparable to the best available in
 the literature.

Format.
  1. Year   of the moment of observation
  2. Month  of the moment of observation
  3. Day    of the moment of observation with decimals
  4. X, arcsec, for U5-Miranda
  5. Y, arcsec, for U5-Miranda
  6. X, arcsec, for U1-Ariel
  7. Y, arcsec, for U1-Ariel
  8. X, arcsec, for U2-Umbriel
  9. Y, arcsec, for U2-Umbriel
 10. X, arcsec, for U3-Titania
 11. Y, arcsec, for U3-Titania

------------------------------------------------------------------------
Year      UTC       X     Y       X     Y       X     Y       X     Y
 month day         U5-Miranda    U1-Ariel      U2-Umbriel    U3-Titania
   with decimals    arcsec        arcsec        arcsec        arcsec
------------------------------------------------------------------------