STKOrbit:

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   Prints orbit data to STK-formatted file.

   Since version 2.
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   Form:
   [err, message] = STKOrbit( fileName, ver, epoch, nPoints, time,
                              position, velocity, type )
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   Inputs
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   fileName           Filename for output. Will be overwritten 
                        if it already exists.
   ver                STK version number (string!)
   epoch              Beginning date and time: [Y M D H M S]
   nPoints            Number of orbit data points
   time               Time in seconds for each data point
   position           Position data in km (if type = ECF
                        or ECI) or in [degrees,degrees,km]
                        (if type = LLR)
   velocity           Velocity data in km/sec (if type = ECF
                        or ECI) or [degrees,degrees,km]/sec
                        (if type = LLR)
   type               'ECI','ECF',or 'LLR'

   -------
   Outputs
   -------
   err                err ~= 0 means an error occurred
   message            Error message

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