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Ephemeris / PORT_LOGIN Thu Sep 23 13:14:09 2004  Pasadena, USA   / Horizons    
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Target body name: Venus (299)                     {source: DE-0406LE-0406}
Center body name: Solar System Barycenter (0)     {source: DE-0406LE-0406}
Center-site name: BODYCENTRIC
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Start time      : A.D. 1968-Dec-20 00:00:00.0000 CT 
Stop  time      : A.D. 1968-Dec-29 00:00:00.0000 CT 
Step-size       : 1 minutes
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Center geodetic : 0.000000,  0.000000,  0.00000   {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 0.00000,     0.000,     0.000   {E-lon(deg),Dxy(km),Dz(km)}
Center radii    : (undefined)                                                  
Output units    : AU-D                                                         
Output format   : 03
Reference frame : ICRF/J2000.0                                                 
Output type     : GEOMETRIC cartesian states
Coordinate systm: Ecliptic and Mean Equinox of Reference Epoch                 
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JDCT 
   X     Y     Z
   VX    VY    VZ
   LT    RG    RR
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$$SOE
2440210.500000000 = A.D. 1968-Dec-20 00:00:00.0000 (CT)
   6.760082873889577E-01  2.703844509385927E-01 -3.516131848906173E-02
  -7.625856605351397E-03  1.867670219630771E-02  6.939357710100474E-04
   4.209918188591249E-03  7.289247383960878E-01 -1.778675970112107E-04
$$EOE
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Coordinate system description:

  Ecliptic and Mean Equinox of Reference Epoch

    Reference epoch: J2000.0
    xy-plane: plane of the Earth's orbit at the reference epoch
    x-axis  : out along ascending node of instantaneous plane of the Earth's
              orbit and the Earth's mean equator at the reference epoch
    z-axis  : perpendicular to the xy-plane in the directional (+ or -) sense
              of Earth's north pole at the reference epoch.

Symbol meaning [1 AU=149597870.691 km, 1 day=86400.0 s]:

    JDCT     Epoch Julian Date, Coordinate Time
      X      x-component of position vector (AU)                               
      Y      y-component of position vector (AU)                               
      Z      z-component of position vector (AU)                               
      VX     x-component of velocity vector (AU/day)                           
      VY     y-component of velocity vector (AU/day)                           
      VZ     z-component of velocity vector (AU/day)                           
      LT     One-way down-leg Newtonian light-time (day)                       
      RG     Range; distance from coordinate center (AU)                       
      RR     Range-rate; radial velocity wrt coord. center (AU/day)            

Geometric states/elements have no aberration corrections applied.

 Computations by ...
     Solar System Dynamics Group, Horizons On-Line Ephemeris System
     4800 Oak Grove Drive, Jet Propulsion Laboratory
     Pasadena, CA  91109   USA
     Information: http://ssd.jpl.nasa.gov/
     Connect    : telnet://ssd.jpl.nasa.gov:6775  (via browser)
                  telnet ssd.jpl.nasa.gov 6775    (via command-line)
     Author     : Jon.Giorgini@jpl.nasa.gov
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