planet: 6 - Saturn
  satellites: S12-Helene  : 131,
              S13-Telesto :  46,
              S14-Calypso :  93
total number: 270
        type: relative
       dates: 1981-1985
 observatory: 809 - La Silla (ESO, Chile)
              568 - Mauna Kea (CFH, Hawaii)

   Oberti P., Veillet C., and Catullo V. (1989) Lagrangian
   satellites of Tethys and Dione. I - Reduction of
   Astronomy and Astrophysics Supplement Series.
   V.80. N.3.  P.289-297.

         relative to: planet
     reference frame: astrometric
     centre of frame: topocentre
    epoch of equinox: 1 - date, 
                      2 - B1950
          time scale: UTC
           reduction: no information
         coordinates: X, Y
    diff. refraction: no information
            receptor: photographic
           telescope: Observatory ESO (Chile) -
                           Danish reflector, D=1.54 m
                      Observatory Mauna Kea (CFH, Hawaii) -
                           D=3.60 m
           observers: Oberti P., Veillet C., Catullo V.
 data included in standard data file: no

          evaluation: The differences  O-C(X)e, O-C(Y)e were also
                      calculated by N.Emelianov with the theory by
                      P. Oberty
                      With these O-C one have
                                                     X        Y
                      M. (mean)                   -0.035"    0.072"
                      R.M.S. (root mean square)    0.432"    0.658"

  1. Number of satellite (N sat)
  2. JD of the moment of observation (UT)
  3. X=Delta(alpha)*cos(delta), arcsec
  4. Y=Delta(delta), arcsec
  5. epoch of equinox (N sys): 1 - date, 2 - B1950
  6. O-C(X)e for X, arcsec
  7. O-C(Y)e for Y, arcsec
  8. Number of observatory (N obs)
     (809 - La Silla, 568 - Mauna Kea)
 N    JD (UT)                 N    O-C(X)e  O-C(Y)e
sat                 X     Y  sys                      N
                 arcsec arcsec     arcsec   arcsec   obs