Orbital elements for assorted interplanetary probes

Last updated 14 October 2001

The following are orbital elements for a variety of NASA and international solar system missions tracked by the Jet Propulsion Laboratory. Almost all of them came from data provided by Steve Matousek at JPL; his original data are posted at

http://ftp.seds.org/pub/spacecraft/elements/jplele.txt 

The Mariner data came from a post on the Minor Planet Mailing List from Tim Wilson, who has since also turned up data for Mars Pathfinder.

In the following, I (Bill Gray) have converted all elements to the MPC "standard" format, except I didn't bother with fields such as the period and the P and Q vectors that I didn't use. I set H=32, meaning that the probes are assumed to have roughly the brightness of a one-meter asteroid. Perhaps most significantly, I converted the elements (from both sources) from B1950 to J2000.

For some objects (Galileo, Cassini, some others) more recent data are available through JPL's Horizons system (which also lists assorted objects not discussed below). You can also get Horizons to cough up Jovicentric elements for Galileo and Saturnicentric ones for Cassini (all the following elements are heliocentric).

Each set of elements is roughly valid over a given time span, specified by 'range'. (For the Mariner elements, I wasn't sure what range was intended. But the elements come close to the targets and not very close to Earth, so I assume they are post-flyby elements. I've set the initial date to that of the flyby.)

Still to be added are some very interesting probes such as SOHO and Genesis, which hang around at the inner Earth-Sun Lagrangian point; MAP (Microwave Anisotropy Probe), at the outer Lagrangian point; and WIND, which has an odd looping orbit that takes it close to the inner Lagrangian point.

  • Pioneer 6
  • Pioneer 7
  • Pioneer 8
  • Pioneer 9
  • Pioneer 10
  • Pioneer 11
  • Voyager 1
  • Voyager 2
  • Pioneer Venus Orbiter
  • Ulysses
  • Giotto
  • Magellan
  • Galileo
  • Mariner 2
  • Mariner 4
  • Mariner 5
  • Mars Pathfinder
  • 
    Orbital elements:
    PIONEER 6
    Range: 1965 12 16   1973 12 18
       Perihelion 1965 Jul 15.890117 TT
    Epoch 1965 Dec 16.0 TT = JDT 2439110.5
    M 177.23720              (2000.0)            P               Q
    n   1.15758171     Peri.    2.38979      0.00000000      0.00000000
    a   0.8983280      Node   261.40834      0.00000000      0.00000000
    e   0.0942806      Incl.    0.16857      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 6
    Range: 1973 12 18   1982 01 01
       Perihelion 1973 Mar 14.920331 TT
    Epoch 1973 Dec 18.0 TT = JDT 2442034.5
    M 321.97413              (2000.0)            P               Q
    n   1.15784849     Peri.   10.42125      0.00000000      0.00000000
    a   0.8981900      Node   253.40799      0.00000000      0.00000000
    e   0.0942609      Incl.    0.20093      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 6
    Range: 1982 01 01   1983 01 01
       Perihelion 1981 Sep 19.560571 TT
    Epoch 1982 Jan 1.0 TT = JDT 2444970.5
    M 119.68898              (2000.0)            P               Q
    n   1.15709243     Peri.    3.22668      0.00000000      0.00000000
    a   0.8985812      Node   260.32328      0.00000000      0.00000000
    e   0.0944090      Incl.    0.16793      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 6
    Range: 1983 01 01   1985 01 01
       Perihelion 1982 Jul 27.716215 TT
    Epoch 1983 Jan 1.0 TT = JDT 2445335.5
    M 181.95586              (2000.0)            P               Q
    n   1.15686341     Peri.    3.29546      0.00000000      0.00000000
    a   0.8986998      Node   260.32178      0.00000000      0.00000000
    e   0.0943646      Incl.    0.16832      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 6
    Range: 1985 01 01   1999 12 31
       Perihelion 1984 Apr 10.056257 TT
    Epoch 1984 Nov 1.0 TT = JDT 2446005.5
    M 237.06537              (2000.0)            P               Q
    n   1.15673388     Peri.    3.20161      0.00000000      0.00000000
    a   0.8987669      Node   260.27330      0.00000000      0.00000000
    e   0.0942279      Incl.    0.16826      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    PIONEER 7
    Range: 1966 08 18   1974 12 15
       Perihelion 1966 Jul 26.526958 TT
    Epoch 1966 Aug 18.0 TT = JDT 2439355.5
    M  20.08070              (2000.0)            P               Q
    n   0.89354614     Peri.  215.90945      0.00000000      0.00000000
    a   1.0675578      Node    85.64784      0.00000000      0.00000000
    e   0.0583821      Incl.    0.60197      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 7
    Range: 1974 12 15   1982 01 01
       Perihelion 1974 Apr 10.348562 TT
    Epoch 1974 Dec 15.0 TT = JDT 2442396.5
    M 222.15200              (2000.0)            P               Q
    n   0.89342735     Peri.  333.76788      0.00000000      0.00000000
    a   1.0676524      Node   323.50199      0.00000000      0.00000000
    e   0.0539719      Incl.    0.09769      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 7
    Range: 1983 01 01   1985 01 01
       Perihelion 1981 Dec 30.595458 TT
    Epoch 1983 Jan 1.0 TT = JDT 2445335.5
    M 327.16010              (2000.0)            P               Q
    n   0.89289314     Peri.  331.60780      0.00000000      0.00000000
    a   1.0680782      Node   325.39325      0.00000000      0.00000000
    e   0.0542734      Incl.    0.10011      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 7
    Range: 1985 01 01   1999 12 31
       Perihelion 1984 Mar 16.061250 TT
    Epoch 1984 Nov 1.0 TT = JDT 2446005.5
    M 205.30189              (2000.0)            P               Q
    n   0.89285467     Peri.  331.72204      0.00000000      0.00000000
    a   1.0681089      Node   325.35085      0.00000000      0.00000000
    e   0.0542954      Incl.    0.10003      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    PIONEER 8
    Range: 1967 12 14   1974 08 19
       Perihelion 1967 Dec 4.635325 TT
    Epoch 1968 Mar 15.0 TT = JDT 2439930.5
    M  94.24556              (2000.0)            P               Q
    n   0.92976727     Peri.  343.44202      0.00000000      0.00000000
    a   1.0396485      Node    89.27917      0.00000000      0.00000000
    e   0.0468871      Incl.    0.05682      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 8
    Range: 1974 08 19   1982 01 01
       Perihelion 1974 Apr 17.471953 TT
    Epoch 1974 Aug 19.0 TT = JDT 2442278.5
    M 114.73767              (2000.0)            P               Q
    n   0.92883899     Peri.  341.53823      0.00000000      0.00000000
    a   1.0403411      Node    91.26827      0.00000000      0.00000000
    e   0.0464424      Incl.    0.05657      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 8
    Range: 1982 01 01   1983 01 01
       Perihelion 1981 Sep 20.583886 TT
    Epoch 1982 Jan 1.0 TT = JDT 2444970.5
    M  95.11652              (2000.0)            P               Q
    n   0.92872616     Peri.  341.08363      0.00000000      0.00000000
    a   1.0404254      Node    91.68083      0.00000000      0.00000000
    e   0.0464284      Incl.    0.05382      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 8
    Range: 1983 01 01   1985 01 01
       Perihelion 1982 Oct 13.176929 TT
    Epoch 1983 Jan 1.0 TT = JDT 2445335.5
    M  74.13760              (2000.0)            P               Q
    n   0.92877406     Peri.  340.42292      0.00000000      0.00000000
    a   1.0403896      Node    92.29889      0.00000000      0.00000000
    e   0.0464398      Incl.    0.05373      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 8
    Range: 1985 01 01   1999 12 31
       Perihelion 1983 Nov 5.802341 TT
    Epoch 1984 Nov 1.0 TT = JDT 2446005.5
    M 335.83403              (2000.0)            P               Q
    n   0.92977910     Peri.  341.46638      0.00000000      0.00000000
    a   1.0396397      Node    91.93037      0.00000000      0.00000000
    e   0.0464594      Incl.    0.05377      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    PIONEER 9
    Range: 1968 11 08   1974 08 19
       Perihelion 1968 Jun 14.133601 TT
    Epoch 1968 Nov 8.0 TT = JDT 2440168.5
    M 177.66850              (2000.0)            P               Q
    n   1.20972871     Peri.    2.66403      0.00000000      0.00000000
    a   0.8723231      Node   225.10869      0.00000000      0.00000000
    e   0.1352927      Incl.    0.08548      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 9
    Range: 1974 08 19   1982 01 01
       Perihelion 1974 Feb 26.231475 TT
    Epoch 1974 Aug 19.0 TT = JDT 2442278.5
    M 210.22416              (2000.0)            P               Q
    n   1.20979423     Peri.    3.11380      0.00000000      0.00000000
    a   0.8722916      Node   224.63552      0.00000000      0.00000000
    e   0.1353416      Incl.    0.08482      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 9
    Range: 1982 01 01   1983 01 01
       Perihelion 1981 Jun 26.884325 TT
    Epoch 1982 Jan 1.0 TT = JDT 2444970.5
    M 227.58843              (2000.0)            P               Q
    n   1.20983235     Peri.    3.19989      0.00000000      0.00000000
    a   0.8722733      Node   224.57148      0.00000000      0.00000000
    e   0.1354572      Incl.    0.08489      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 9
    Range: 1983 01 01   1985 01 01
       Perihelion 1982 Apr 20.435071 TT
    Epoch 1983 Jan 1.0 TT = JDT 2445335.5
    M 309.15271              (2000.0)            P               Q
    n   1.20968364     Peri.    3.55419      0.00000000      0.00000000
    a   0.8723448      Node   223.86264      0.00000000      0.00000000
    e   0.1353967      Incl.    0.08535      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 9
    Range: 1985 01 01   1999 12 31
       Perihelion 1984 Sep 29.256784 TT
    Epoch 1984 Nov 1.0 TT = JDT 2446005.5
    M  39.60173              (2000.0)            P               Q
    n   1.20946361     Peri.    3.96575      0.00000000      0.00000000
    a   0.8724506      Node   223.72557      0.00000000      0.00000000
    e   0.1354483      Incl.    0.08519      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    PIONEER 10
    Range: 1972 03 03   1973 12 03
       Perihelion 1972 Feb 29.887834 TT
    Epoch 1972 Mar 3.0 TT = JDT 2441379.5
    M   0.32084              (2000.0)            P               Q
    n   0.15189919     Peri.  177.20544      0.00000000      0.00000000
    a   3.4788236      Node   342.93840      0.00000000      0.00000000
    e   0.7151435      Incl.    1.92228      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 10
    Range: 1973 12 03   1982 01 01
       Perihelion 1973 Dec 2.044579 TT
    Epoch 1975 Jun 1.0 TT = JDT 2442564.5
    q   5.06434354           (2000.0)            P               Q
                       Peri.  346.72874      0.00000000      0.00000000
                       Node   332.10994      0.00000000      0.00000000
    e   1.7371996      Incl.    3.14474      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 10
    Range: 1982 01 01   1985 01 01
       Perihelion 1973 Nov 30.275103 TT
    Epoch 1982 Jan 1.0 TT = JDT 2444970.5
    q   5.03675780           (2000.0)            P               Q
                       Peri.  346.59597      0.00000000      0.00000000
                       Node   332.00565      0.00000000      0.00000000
    e   1.7254456      Incl.    3.14471      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 10
    Range: 1985 01 01   2010 12 31
       Perihelion 1973 Dec 4.209404 TT
    Epoch 1985 Jan 1.0 TT = JDT 2446066.5
    q   5.03468288           (2000.0)            P               Q
                       Peri.  347.07154      0.00000000      0.00000000
                       Node   331.56035      0.00000000      0.00000000
    e   1.7278354      Incl.    3.14700      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    PIONEER 11
    Range: 1973 04 05   1974 12 03
       Perihelion 1966 Jul 19.381866 TT
    Epoch 1973 Apr 5.0 TT = JDT 2441777.5
    M 359.99307              (2000.0)            P               Q
    n   0.14683896     Peri.  180.08341      0.00000000      0.00000000
    a   3.5582941      Node    15.42170      0.00000000      0.00000000
    e   0.7188326      Incl.    2.97362      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 11
    Range: 1974 12 03   1979 09 01
       Perihelion 1906 Jun 7.016065 TT
    Epoch 1974 Dec 3.0 TT = JDT 2442384.5
    M 353.86696              (2000.0)            P               Q
    n   0.01414563     Peri.   59.39297      0.00000000      0.00000000
    a  16.9325006      Node   356.08171      0.00000000      0.00000000
    e   0.7800082      Incl.   13.63148      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 11
    Range: 1979 09 01   1982 01 01
       Perihelion 1980 Feb 17.225277 TT
    Epoch 1979 Sep 1.0 TT = JDT 2444117.5
    q   9.26635972           (2000.0)            P               Q
                       Peri.   18.62351      0.00000000      0.00000000
                       Node   159.67795      0.00000000      0.00000000
    e   2.1548022      Incl.   14.24300      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 11
    Range: 1982 01 01   1985 01 01
       Perihelion 1979 Dec 1.599354 TT
    Epoch 1982 Jan 1.0 TT = JDT 2444970.5
    q   9.35657015           (2000.0)            P               Q
                       Peri.   12.82356      0.00000000      0.00000000
                       Node   160.39432      0.00000000      0.00000000
    e   2.1597440      Incl.   16.61938      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 11
    Range: 1985 01 01   1987 09 01
       Perihelion 1979 Nov 30.081721 TT
    Epoch 1985 Jan 1.0 TT = JDT 2446066.5
    q   9.36371271           (2000.0)            P               Q
                       Peri.   12.81222      0.00000000      0.00000000
                       Node   160.43649      0.00000000      0.00000000
    e   2.1532143      Incl.   16.62239      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER 11
    Range: 1987 09 01   2010 12 31
       Perihelion 1979 Nov 27.289802 TT
    Epoch 1987 Sep 1.0 TT = JDT 2447039.5
    q   9.34262395           (2000.0)            P               Q
                       Peri.   12.68426      0.00000000      0.00000000
                       Node   160.43506      0.00000000      0.00000000
    e   2.1466490      Incl.   16.62343      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    VOYAGER 2
    Range: 1977 08 22   1979 07 09
       Perihelion 1977 Aug 30.124929 TT
    Epoch 1978 Sep 13.0 TT = JDT 2443764.5
    M  53.78670              (2000.0)            P               Q
    n   0.14196422     Peri.   11.79781      0.00000000      0.00000000
    a   3.6392910      Node   327.69155      0.00000000      0.00000000
    e   0.7247924      Incl.    4.84291      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    VOYAGER 2
    Range: 1979 07 09   1981 08 26
       Perihelion 1978 Dec 11.070186 TT
    Epoch 1979 Sep 16.0 TT = JDT 2444132.5
    q   5.02057443           (2000.0)            P               Q
                       Peri.  350.94950      0.00000000      0.00000000
                       Node   119.77591      0.00000000      0.00000000
    e   1.3378166      Incl.    2.57871      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    VOYAGER 2
    Range: 1981 08 26   1986 01 24
       Perihelion 1981 Jul 29.780499 TT
    Epoch 1984 Jan 1.0 TT = JDT 2445700.5
    q   9.60541829           (2000.0)            P               Q
                       Peri.  112.39985      0.00000000      0.00000000
                       Node    77.51323      0.00000000      0.00000000
    e   3.4483721      Incl.    2.66335      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    VOYAGER 2
    Range: 1986 01 24   1987 03 13
       Perihelion 1982 Nov 24.980244 TT
    Epoch 1986 Mar 4.0 TT = JDT 2446493.5
    q  14.40393776           (2000.0)            P               Q
                       Peri.  313.77367      0.00000000      0.00000000
                       Node   260.46434      0.00000000      0.00000000
    e   5.8173618      Incl.    2.49420      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    VOYAGER 2
    Range: 1987 03 13   1989 08 25
       Perihelion 1982 Nov 24.656697 TT
    Epoch 1987 Jul 3.0 TT = JDT 2446979.5
    q  14.39968314           (2000.0)            P               Q
                       Peri.  313.74456      0.00000000      0.00000000
                       Node   260.47181      0.00000000      0.00000000
    e   5.8064009      Incl.    2.49559      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    VOYAGER 2
    Range: 1989 08 25   2040 12 31
       Perihelion 1983 Apr 30.168217 TT
    Epoch 1990 Jan 1.0 TT = JDT 2447892.5
    q  21.24042267           (2000.0)            P               Q
                       Peri.  130.06441      0.00000000      0.00000000
                       Node   101.63278      0.00000000      0.00000000
    e   6.2841031      Incl.   78.81706      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    VOYAGER 1
    Range: 1977 09 05   1979 03 05
       Perihelion 1977 Sep 5.288235 TT
    Epoch 1978 Aug 30.0 TT = JDT 2443750.5
    M  31.64972              (2000.0)            P               Q
    n   0.08823162     Peri.  359.57128      0.00000000      0.00000000
    a   4.9971211      Node   342.79578      0.00000000      0.00000000
    e   0.7985283      Incl.    1.04183      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    VOYAGER 1
    Range: 1979 03 05   1980 11 13
       Perihelion 1978 Nov 21.759955 TT
    Epoch 1979 Apr 27.0 TT = JDT 2443990.5
    q   5.16621914           (2000.0)            P               Q
                       Peri.  358.66773      0.00000000      0.00000000
                       Node   113.47857      0.00000000      0.00000000
    e   2.2995925      Incl.    2.47672      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    VOYAGER 1
    Range: 1980 11 13   2040 01 01
       Perihelion 1979 Dec 18.446218 TT
    Epoch 1986 Jan 1.0 TT = JDT 2446431.5
    q   8.77808278           (2000.0)            P               Q
                       Peri.  338.25162      0.00000000      0.00000000
                       Node   179.05446      0.00000000      0.00000000
    e   3.7255852      Incl.   35.79407      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    PIONEER VENUS ORB
    Range: 1978 05 25   1978 12 04
       Perihelion 1978 Feb 8.058763 TT
    Epoch 1978 May 25.0 TT = JDT 2443653.5
    M 123.36147              (2000.0)            P               Q
    n   1.16443293     Peri.   40.29470      0.00000000      0.00000000
    a   0.8948009      Node    63.23785      0.00000000      0.00000000
    e   0.1977788      Incl.    1.63166      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    PIONEER VENUS ORB
    Range: 1978 12 04   1999 12 31
       Perihelion 1978 May 20.508414 TT
    Epoch 1978 Dec 12.0 TT = JDT 2443854.5
    M 329.22450              (2000.0)            P               Q
    n   1.60213128     Peri.   54.83151      0.00000000      0.00000000
    a   0.7233314      Node    76.73912      0.00000000      0.00000000
    e   0.0067828      Incl.    3.39487      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    ULYSSES
    Range: 1990 10 06   1992 02 08
       Perihelion 1990 Oct 11.756975 TT
    Epoch 1990 Oct 16.0 TT = JDT 2448180.5
    M   0.15511              (2000.0)            P               Q
    n   0.03655590     Peri.    7.78395      0.00000000      0.00000000
    a   8.9914783      Node    13.49967      0.00000000      0.00000000
    e   0.8891658      Incl.    1.99692      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    ULYSSES
    Range: 1992 02 08   2001 01 01
       Perihelion 1995 Mar 13.000000 TT
    Epoch 1995 Mar 13.0 TT = JDT 2449789.5
    M   0.00000              (2000.0)            P               Q
    n   0.15898102     Peri.  358.91202      0.00000000      0.00000000
    a   3.3747313      Node   338.18170      0.00000000      0.00000000
    e   0.6026173      Incl.   79.11612      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    GIOTTO
    Range: 1985 07 02   1986 04 03
       Perihelion 1985 Mar 3.579075 TT
    Epoch 1985 Jul 15.0 TT = JDT 2446261.5
    M 159.31240              (2000.0)            P               Q
    n   1.19405856     Peri.  204.65838      0.00000000      0.00000000
    a   0.8799385      Node   281.74779      0.00000000      0.00000000
    e   0.1783803      Incl.    2.10274      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GIOTTO
    Range: 1986 04 03   1999 12 31
       Perihelion 1985 Dec 31.056058 TT
    Epoch 1986 Apr 3.0 TT = JDT 2446523.5
    M 109.77213              (2000.0)            P               Q
    n   1.18105734     Peri.  206.80435      0.00000000      0.00000000
    a   0.8863843      Node   281.34110      0.00000000      0.00000000
    e   0.1733404      Incl.    2.09192      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    MAGELLAN
    Range: 1989 04 28   1990 08 10
       Perihelion 1988 Dec 19.815818 TT
    Epoch 1989 Apr 28.0 TT = JDT 2447644.5
    M 160.25500              (2000.0)            P               Q
    n   1.24051565     Peri.   14.05168      0.00000000      0.00000000
    a   0.8578300      Node    37.86589      0.00000000      0.00000000
    e   0.1814060      Incl.    0.65580      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    MAGELLAN
    Range: 1990 08 10   1999 12 31
       Perihelion 1990 Jan 26.114980 TT
    Epoch 1990 Aug 10.0 TT = JDT 2448113.5
    M 313.83333              (2000.0)            P               Q
    n   1.60213031     Peri.   54.86360      0.00000000      0.00000000
    a   0.7233317      Node    76.70672      0.00000000      0.00000000
    e   0.0067775      Incl.    3.39477      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    MAGELLAN POST LAUNCH
    Range: 1989 05 15   1989 11 08
       Perihelion 1988 Dec 21.842213 TT
    Epoch 1989 May 15.0 TT = JDT 2447661.5
    M 179.66465              (2000.0)            P               Q
    n   1.24630554     Peri.    9.46912      0.00000000      0.00000000
    a   0.8551711      Node    44.15004      0.00000000      0.00000000
    e   0.1826745      Incl.    0.78512      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    MAGELLAN POST LAUNCH
    Range: 1989 11 08   1990 08 10
       Perihelion 1989 Oct 6.710765 TT
    Epoch 1989 Nov 8.0 TT = JDT 2447838.5
    M  40.08485              (2000.0)            P               Q
    n   1.24143090     Peri.    9.90187      0.00000000      0.00000000
    a   0.8574083      Node    43.62271      0.00000000      0.00000000
    e   0.1793662      Incl.    0.76739      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    MAGELLAN POST LAUNCH
    Range: 1990 08 10   1991 23 1.
       Perihelion 1990 Jan 26.114980 TT
    Epoch 1990 Aug 10.0 TT = JDT 2448113.5
    M 313.83333              (2000.0)            P               Q
    n   1.60213031     Peri.   54.86360      0.00000000      0.00000000
    a   0.7233317      Node    76.70672      0.00000000      0.00000000
    e   0.0067775      Incl.    3.39477      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1989 11 09   1990 02 10
       Perihelion 1989 Jun 6.557870 TT
    Epoch 1989 Nov 9.0 TT = JDT 2447839.5
    M 201.75944              (2000.0)            P               Q
    n   1.29797139     Peri.  184.73100      0.00000000      0.00000000
    a   0.8323244      Node    25.33840      0.00000000      0.00000000
    e   0.1978504      Incl.    4.32807      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1990 02 10   1990 04 30
       Perihelion 1989 Feb 28.453960 TT
    Epoch 1990 Feb 14.0 TT = JDT 2447936.5
    M 349.47433              (2000.0)            P               Q
    n   0.99694273     Peri.  107.14372      0.00000000      0.00000000
    a   0.9924057      Node    76.48532      0.00000000      0.00000000
    e   0.2961087      Incl.    3.38119      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1990 04 30   1990 12 08
       Perihelion 1990 Feb 25.206075 TT
    Epoch 1990 Apr 30.0 TT = JDT 2448011.5
    M  63.98901              (2000.0)            P               Q
    n   1.00305808     Peri.  106.57408      0.00000000      0.00000000
    a   0.9883680      Node    76.57164      0.00000000      0.00000000
    e   0.2947102      Incl.    3.39203      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1990 12 08   1991 09 10
       Perihelion 1989 Jan 8.705550 TT
    Epoch 1990 Dec 12.0 TT = JDT 2448237.5
    M 345.16872              (2000.0)            P               Q
    n   0.49148718     Peri.  223.14480      0.00000000      0.00000000
    a   1.5902348      Node   256.60862      0.00000000      0.00000000
    e   0.4311774      Incl.    4.53976      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1991 09 10   1992 08 04
       Perihelion 1991 Jan 10.719369 TT
    Epoch 1991 Sep 10.0 TT = JDT 2448509.5
    M 119.41329              (2000.0)            P               Q
    n   0.49287180     Peri.  223.11318      0.00000000      0.00000000
    a   1.5872551      Node   256.60346      0.00000000      0.00000000
    e   0.4303243      Incl.    4.53793      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1992 08 04   1992 12 08
       Perihelion 1991 Jan 9.026645 TT
    Epoch 1992 Aug 4.0 TT = JDT 2448838.5
    M 281.72936              (2000.0)            P               Q
    n   0.49169714     Peri.  222.59821      0.00000000      0.00000000
    a   1.5897821      Node   256.92521      0.00000000      0.00000000
    e   0.4296549      Incl.    4.53410      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1992 12 08   1993 03 03
       Perihelion 1987 May 16.914811 TT
    Epoch 1992 Dec 11.0 TT = JDT 2448967.5
    M 359.73324              (2000.0)            P               Q
    n   0.17676569     Peri.  186.26685      0.00000000      0.00000000
    a   3.1443972      Node   256.83169      0.00000000      0.00000000
    e   0.6875551      Incl.    1.52238      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1993 03 03   1993 09 04
       Perihelion 1992 Dec 12.840330 TT
    Epoch 1993 Mar 3.0 TT = JDT 2449049.5
    M  14.27007              (2000.0)            P               Q
    n   0.17802055     Peri.  186.28625      0.00000000      0.00000000
    a   3.1296033      Node   256.80677      0.00000000      0.00000000
    e   0.6860700      Incl.    1.52009      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1993 09 04   1995 12 07
       Perihelion 1992 Dec 12.574231 TT
    Epoch 1993 Sep 4.0 TT = JDT 2449234.5
    M  46.95281              (2000.0)            P               Q
    n   0.17689618     Peri.  186.46500      0.00000000      0.00000000
    a   3.1428506      Node   256.93024      0.00000000      0.00000000
    e   0.6854801      Incl.    1.51595      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    Orbital elements:
    GALILEO GASPRA+IDA (POST LAUNCH)
    Range: 1995 12 07   2000 12 31
       Perihelion 1987 Jun 21.840586 TT
    Epoch 1995 Dec 7.0 TT = JDT 2450058.5
    M 256.64262              (2000.0)            P               Q
    n   0.08305158     Peri.  273.71832      0.00000000      0.00000000
    a   5.2028038      Node   100.44233      0.00000000      0.00000000
    e   0.0484940      Incl.    1.30329      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Steve Matousek (JPL) SEDS file
    
    
    Orbital elements:
    Mariner 2
    Range: 1962 12 14   ???? ?? ??
       Perihelion 1962 Dec 28.20929 TT
    Epoch ????
    M   0.00000              (2000.0)            P               Q
    n   1.03909661     Peri.   83.83014      0.00000000      0.00000000
    a   0.9653810      Node    43.24061      0.00000000      0.00000000
    e   0.2700757      Incl.    1.66886      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Tim Wilson,  private e-mail,  Aug 2001
    
    
    Orbital elements:
    Mariner 4
    Range: 1965 07 14   ???? ?? ??
       Perihelion 1967 Dec 25.59807 TT
    Epoch ????
    M   0.00000              (2000.0)            P               Q
    n   0.63470803     Peri.  200.53194      0.00000000      0.00000000
    a   1.3409731      Node   227.57428      0.00000000      0.00000000
    e   0.1730351      Incl.    2.53607      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Tim Wilson,  private e-mail,  Aug 2001
    
    
    Orbital elements:
    Mariner 5
    Range: 1967 10 19   ???? ?? ??
       Perihelion 1968 Jan 4.47206 TT
    Epoch ????
    M   0.00000              (2000.0)            P               Q
    n   1.84961543     Peri.   92.38149      0.00000000      0.00000000
    a   0.65727698     Node   114.56846      0.00000000      0.00000000
    e   0.1176809      Incl.    1.38859      0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Tim Wilson,  private e-mail,  Aug 2001
    
    
    Orbital elements:
    Mars Pathfinder
    Range: 1996 12 04   1997 07 04
       Perihelion 1996 Dec 3.42045 TT
    Epoch 1997 Mar 1.0 TT = JDT 2450508.5
    M  58.807                (2000.0)            P               Q
    n   0.67146956     Peri.  350.362        0.00000000      0.00000000
    a   1.2915716      Node    81.221        0.00000000      0.00000000
    e   0.236386       Incl.    0.104        0.00000000      0.00000000
    P                  H   32.0           G   0.15
    Ref: Tim Wilson,  private e-mail,  Oct 2001
    http://mars.jpl.nasa.gov/MPF/mpf/mpftechtraj.html#ORBEL