Contents.
      planet: 7 - Uranus  
  satellites: U2-Umbriel :  2,
              U4-Oberon  :  2
total number: 4
        type: relative
       dates: 1849-1849
 observatory: no information

References.
   Lassel W. (1850)
   Bright Satellites of Uranus
   Monthly Notices of the Royal Astronomical Society. V. 10. P. 135-135.
   1850MNRAS__10__135L

Informations.
         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: Equatoreal, D= 20-feet
           observers: W. Lassel
 data included in standard data file: no

Comments.
          no information

Format.
  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
  7. Seconde of the observation with decimals
  8. Degrees of P (position angle) in degrees (999 if not given)
  9. Arcmin of P (position angle)(99 if not given)
 10. S (separation) in arcsec (-99.99 if not given)
 
------------------------------------------
N  Year         G.M.T.       P        
sat  month                deg.        S  
          day   h  m  s    arcmin   arcsec
------------------------------------------