Contents.
      planet: 7 - Uranus
  satellites: U1-Ariel     : 7,
              U2-Umbriel   : 7,
              U3-Titania   : 7,
              U4-Oberon    : 7
              U5-Miranda   : 2
total number: 30
        type: relative
       dates: 2007-2007
 observatory: F65 - Haleakala-Faulkes Telescope North

Reference.
   Khovritchev M. Yu. (2009)
   Astrometric observations of the Uranian satellites with the Faulkes
   Telescope North in 2007 September
   Monthly Notices of the Royal Astronomical Society. V. 393. P. 1353–1358. 
   2009MNRAS_393_1353K

Informations.
         relative to: center of mass of satellite images (see comments)
     reference frame: astrometric
     centre of frame: topocenter
    epoch of equinox: J2000
          time scale: UTC
           reduction: 2MASS and USNO-B1.0 used as reference catalogues
         coordinates: X, Y
    diff. refraction: no information
            receptor: CCD
           telescope: Faulkes Telescope
           observers: Khovritchev M. Yu. 
 data included in standard data file: no

Comments.
   The center of mass of satellite images is defined in condition
   that the sum of X coorditates of all satellites which are present 
   on the picture is equal to zero. And similary for Y coordinates. 
   Note that two pictures contain on 5 satellites and
   five pictures contain on 4 satellites.
      The Two-Micron All-Sky Survey (2MASS) and USNO-B1.0
   were used as reference catalogues.
      The DE405 (Standish 1998) and INPOP (Fienga et al. 2008) planetary theories 
   and the GUST86 (Laskar & Jacobson 1987) and GUST06 (Emelyanov et al. 2006) 
   satellite theories were applied to compute the O-C (see article).
   The satellites' positions obtained with respect to 2MASS are
   in better agreement with theories than the coordinates of the
   satellites determined with respect to USNO-B1.0.
          
Format.
  1. Number of satellite (N sat): 1 - U1, 2 - U2, 3 - U3, 4 - U4, 5 - U5
  2. Year of observation
  3. Month of observation
  4. Day of observation with decimals (UTC)
  5. X, arcsec, with USNO-B1.0
  6. Y, arcsec, with USNO-B1.0
  7. X, arcsec, with 2MASS
  8. Y, arcsec, with 2MASS

-----------------------------------------------------------
 N  Year   day (UTC)  X - USNO-B1.0 - Y   X --- 2MASS --- Y       
sat    Month           arcsec    arcsec    arcsec    arcsec   
-----------------------------------------------------------