Contents.
      planet: 7 - Uranus  
  satellites: U1-Ariel   :  1,
              U3-Titania : 29,
              U4-Oberon  : 28
total number: 58
        type: relative
       dates: 1920-1922
 observatory: 786 - U.S. Naval Obs., Washington
             
Reference.
   Hall Asaph Jr. (1921)
   Observations of the satellites of Uranus.
   Astronomical Journal. V. 34. N. 793. P. 5-6.
   1921AJ_____34____5H
   Hall Asaph Jr. (1922)
   Observations of the satellites of Uranus, 1921.
   Astronomical Journal. V. 34. N. 802. P. 92-92.
   1922AJ_____34___92H
   Hall A., Bower E. C. (1923)
   Observations of satellites of Uranus, 1922.
   Astronomical Journal. V. 35. N. 830. P. 116-116.
   1923AJ_____35__116B

Informations.
         relative to: planet
     reference frame: apparent
     centre of frame: topocentre
    epoch of equinox: date
          time scale: G.M.T.
           reduction: no information
         coordinates: position angle and separation
    diff. refraction: not excluded
            receptor: micrometric
           telescope: Refractor, D=26 inch
           observers: Hall A.Jr., Bower E.C. 
 data included in standard data file: no

Comments.
          no information

Format.
  1. Observed satellite number, obs.
  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
  8. P (position angle) in degrees
  9. Hour    of the observation
 10. Minute  of the observation
 11. Seconde of the observation
 12. S (separation) in arcsec

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sat Year         G.M.T.            G.M.T.   
obs   month     h  m  s    P      h  m  s    S  
           day          degrees           arcsec
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