While the file release form (below) is named "URA090," in fact this is a re-release of the
URA090 ephemeris. It reportedly made use of a few more data points for one satellite, but
more importantly, it used a revised (improved) step size during the integration process.
The authors report this solution is slightly better than the previous version, and it is
the one that has been published under the URA090 name.

For SPICE purposes, the SPK version of this re-release is named URA090_1.

C. Acton  11/26/2008





                      Satellite Ephemeris File Release


Satellite Ephemeris: URA090

Location: ssd.jpl.nasa.gov/pub/eph/satellites/nio/LINUX_PC/ura090.20081120.nio
Size(nio): 11432960 bytes

Enter SATEPHMERGE/13 27-Aug-2008 16:56:18.870 linked 01-Apr-2008 09:16:24
Merge of backward and forward
Fit to Astrometric data
Ephemeris Version Number: 17
Timespan from JED  2415020.500(01-JAN-1900) to JED  2488060.500(23-DEC-2099)
File Epoch Julian Date: 2454040.50
Master Interval: 20.0000 Days
Equinox Reference Julian Date: 2451545.00
Planetary Ephemeris Number: DE-0421/LE-0421

Bodies on the File:

   Name        Number            GM             NDIV   NDEG   Model
   Caliban       716    0.000000000000000E+00      1      5   SATORBINT
   Sycorax       717    0.000000000000000E+00      1      5   SATORBINT
   Prospero      718    0.000000000000000E+00      1      5   SATORBINT
   Setebos       719    0.000000000000000E+00      1      5   SATORBINT
   Stephano      720    0.000000000000000E+00      1      5   SATORBINT
   Trinculo      721    0.000000000000000E+00      1      5   SATORBINT
   Francisco     722    0.000000000000000E+00      1      6   SATORBINT
   Margaret      723    0.000000000000000E+00      1      7   SATORBINT
   Ferdinand     724    0.000000000000000E+00      1      5   SATORBINT
   Uranus        799    5.793965663939276E+06      1      3   SATORBINT
   System               5.794557628118015E+06

Additional Constants on the File:

  AU       1.495978706996262E+08   RADIUS   2.620000000000000E+04
  J702     3.344247802666718E-03   J704    -2.772599495619087E-05
  POLTIM   2.451545000000000E+06   ZACPL7   7.731389269399078E+01
  ZDEPL7   1.517461924095530E+01   DACPL7   0.000000000000000E+00
  DDEPL7   0.000000000000000E+00   WPL7     2.038100000000000E+02
  WDP7    -5.011600928000000E+02   705GM    4.403988880239192E+00
  702GM    8.148337213859010E+01   701GM    8.648943821066345E+01
  704GM    1.909467780172403E+02   703GM    2.286406014922988E+02
  GM8      6.836527300000000E+06   GM6      3.794058520000000E+07
  GM5      1.267127648000000E+08   GM10     1.327132332632381E+11


Chebyshev interpolation error:  150.0 meters

Release to: ssd,horizons                       Time: 27-Aug-2008 16:58:16

Preparer: M. Brozovic

Comments:
Ephemeris for Uranus satellites. Observations from 01-JUN-1984 to 22-OCT-2006.