planet: 7 - Uranus  
  satellites: U1-Ariel   : 19,
              U2-Umbriel : 15,
              U3-Titania : 49,
              U4-Oberon  : 48
total number: 131
        type: relative
       dates: 1852-1853
 observatory: Valetta

   Lassel W. (1853)
   Observations of the Satellites of Uranus.
   Monthly Notices of the Royal Astronomical Society. V. 13. P. 147-151.

         relative to: planet
     reference frame: apparent
     centre of frame: topocentre
    epoch of equinox: date
          time scale: Grinwich Mean Time
           reduction: no information
         coordinates: position angle and separation
    diff. refraction: no information
            receptor: micrometric
           telescope: Equatorial, D=20-foot
           observers: W. Lassel
 data included in standard data file: no

          no information

  1. Observed satellite number (N sat)
  2. Year    of the moment of observation
  3. Month   of the moment of observation
  4. Day     of the moment of observation 
  5. Hour    of the observation
  6. Minute  of the observation with decimals
  7. Degrees of P (position angle) in degrees (999 if not given)
  8. Arcmin  of P (position angle) in degrees (99 if not given)
  9. S (separation) in arcsec (-99.99 if not given)
N  Year        G.M.T.    P        
sat  month     h  m  deg.      S  
          day        arcmin  arcsec