Contents.
      planet: 7 - Uranus  
  satellites: U1-Ariel  :  108,
              U2-Umbriel:  103,
              U3-Titania:   66,
              U4-Oberon:    64,
              U5-Miranda:  104,
total number: 445
        type: relative
       dates: 1985-1986
 observatory: Voyager 2 spacecraft centered positions

Reference.
   Jacobson R. A. (1992)
   Astrographic observations of the major Uranian satellites from Voyager 2
   Astronomy and Astrophysics Supplement Series, vol. 96, pp. 549-563
   1992A%26AS___96__549J

Informations.
         relative to: absolute
     reference frame: FK4
     centre of frame: Voyager 2 spacecraft centered positions
    epoch of equinox: B1950
          time scale: UTC
           reduction: no information
         coordinates: right ascension and declination
    diff. refraction: n.a.
            receptor: CCD 800x800
           telescope: Voyager narrow angle camera
           observers: JPL
 data included in standard data file: no

Comments.
          no 

Format.
  1. SAT-NB, Satellite number (1=Ariel; 2=Umbriel; 3=Titania; 4=Oberon; 5=Miranda)
  2. Voyager Picture Identification (PICNO)
  3. observation time (time of the center of the exposure) in 
     Julian Ephemeris Date (JED)
  4. Voyager centered astrographic right ascension (RA) 
     of the satellite in the FK4/B1950 system 
     in degrees corrected for stellar aberration
  5. Voyager centered astrographic declination (DEC)
     of the satellite in the FK4/B1950 system 
     in degrees corrected for stellar aberration
  6. uRA, uncertainty associated to RA with units of degrees
  7. uDEC, uncertainty associated to DEC with units of degrees
  8. Voyager Picture Identification (PICNO)
  9. Tau, light travel time from the satellite to the spacecraft in
     units of seconds
 10, 11, 12. the modified Uranus barycentric position X, Y, Z of the
     spacecraft at the observation time in FK4/B1950 coordinates
     with units of km
 13. RAa, right ascension of the unit vector along the approach trajectory 
     asymptote in the FK4/B1950 system with units of degrees
 14. DECa, declination of the unit vector along the approach trajectory 
     asymptote in the FK4/B1950 system with units of degrees

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SAT-NB  PICNO JED             RA         DEC          uRA       uDEC    PICNO      Tau              X             Y            Z     RAa     DECa
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