Satellite Ephemeris File Release
 
 
Satellite Ephemeris: JUP202
 
Location: ssd.jpl.nasa.gov/pub/eph/satellites/nio/jup202.nio
Location: ssd.jpl.nasa.gov/pub/eph/satellites/xsp/jup202.xsp
Size(nio): 12843008 bytes
 
Enter SATEPHMERGE/11 24-Jan-2002 10:15: 3.443 linked 31-May-2001 09:59:55
Ephemeris from Earth-based data fit
Ephemeris Version Number: 11
Timespan from JED  2442684.500(29-SEP-1975) to JED  2460676.500(01-JAN-2025)
File Epoch Julian Date: 2452400.50
Master Interval: 4.0000 Days
Equinox Reference Julian Date: 2451545.00
Planetary Ephemeris Number: DE-0405/LE-0405
 
Bodies on the File:
 
    Name          Number          GM                NDIV   NDEG   Model
    1999J1         517     0.000000000000000E+00      1      4    SATINT
    75/j1          518     0.000000000000000E+00      1      5    SATINT
    00/j2          519     0.000000000000000E+00      1      3    SATINT
    00/j3          520     0.000000000000000E+00      1      3    SATINT
    00/j4          521     0.000000000000000E+00      1      3    SATINT
    00/j5          522     0.000000000000000E+00      1      3    SATINT
    00/j6          523     0.000000000000000E+00      1      3    SATINT
    00/j7          524     0.000000000000000E+00      1      3    SATINT
    00/j8          525     0.000000000000000E+00      1      3    SATINT
    00/j9          526     0.000000000000000E+00      1      3    SATINT
    00/j10         527     0.000000000000000E+00      1      3    SATINT
    00/j11         528     0.000000000000000E+00      1      3    SATINT
    Jupiter        599     1.267127643976805E+08      1      2    SATINT
    System                 1.267127643976805E+08
 
Additional Constants on the File:
 
    AU       1.495978706910000E+08   RADIUS   7.139800000000000E+04
    J502     4.512609982936969E-02   POLTIM   2.451545000000000E+06
    ZACPL5   2.680500000000000E+02   ZDEPL5   6.448999999999999E+01
    DACPL5  -8.999999999999999E-03   DDEPL5   3.000000000000000E-03
    WPL5     2.849500000000000E+02   WDP5     8.705359999999999E+02
    GM0600   3.794062976400000E+07   GM0700   5.794548600000000E+06
    GM0800   6.836534900000000E+06   GM1000   1.327132332402215E+11
 
Chebyshev interpolation error:  621.0 meters
 
Release to: Horizons/NAIF                      Time: 24-Jan-2002 10:16:51
 
Preparer: R. A. Jacobson
 
Comments:
Irregular Jovian satellites from fit to all data through Jan 2002.
 
This SPK file was created from JUP202, created by R. Jacobson on 24-Jan-2002 per request of NAIF to fill a data order.
 
 
                ===== CAUTION ===== CAUTION ===== CAUTION =====
Jacobson STRONGLY CAUTIONS that the number of observations of these new satellites is very small, and so the accuracy of this ephemeris degrades very quickly as one moves away from the epochs of the observations... in 1999 and 2000. Consequently any use of this file past perhaps 1/1/2001 must be assumed to be illustrative at best.
 
The data for the Jupiter mass center (599) in JUP202.NIO are not correct, as is typical for such files for the non-major satellites. I used 599 data from JUP166.NIO to supercede the 599 data from JUP202.NIO.
 
C. Acton
1/25/2002