Preliminary SPK for DSN Station DSS 59
  =====================================================================
 
  Original file name:                   dss_59_prelim_itrf93_220921.bsp
  Creation date:                        2022-09-21 14:30
  Created by:                           Nat Bachman  (NAIF/JPL)
 
  Introduction
  =====================================================================
 
  This file provides geocentric states---position and velocity---as a
  slowly varying function of time for the DSN station DSS 59.
 
  Station position vectors point from the earth's barycenter
  to the station; the vectors are expressed in the ITRF93 terrestrial
  reference frame. Station velocities are estimates of the
  derivative with respect to time of these vectors; in this file,
  velocity is constant. The station velocity has magnitude on the
  order of a few cm/year.
 
  States obtained from this file are given relative to the terrestrial
  reference frame ITRF93.
 
  Using this kernel
  =====================================================================
 
  Kernel loading
  --------------
 
  In order for a SPICE-based program to make use of this kernel, the
  kernel must be loaded via the SPICE routine FURNSH. If you are
  running application software created by a third party, see the
  documentation for that software for instructions on kernel
  management.
 
  See also "Associated frame kernels" and "Associated PCK files"
  below.
 
  Associated PCK files
  --------------------
 
  This kernel should be used together with a binary Earth PCK file.
 
     NAIF produces these kernels on a regular basis; they can be
     obtained via anonymous ftp from the NAIF server
 
        naif.jpl.nasa.gov
 
     The PCK is located in the path
 
        pub/naif/generic_kernels/pck
 
     The file name is of the form
 
        earth_000101_yymmdd_yymmdd.bpc
 
     The first two dates are the file's start and stop times; the third
     is the epoch of the last datum in the EOP file: data from
     this epoch forward are predicted.
 
     The file's coverage starts at a fixed date (currently chosen to
     be 2000 Jan. 1) and extends to the end of the predict region,
     which has a duration of roughly 3 months.
 
     NAIF also provides a low-accuracy, long-term predict binary Earth
     PCK file. See the path cited above for this file and accompanying
     documentation.
 
  Associated frame kernels
  ------------------------
 
  The frame kernel having (original) file name
 
     dss_59_prelim_itrf93_220921.tf
 
  defines a topocentric reference frame associated with the station
  covered by this file. That kernel supports computations such
  as finding the azimuth and elevation of a target as seen from
  the DSS-59 station.
 
 
  Data sources
  =====================================================================
 
  The data provided here were provided in an email from Connie Dang (JPL),
  received 2022-09-13. Data from that message are shown below.
 
  Frame epoch x(m)         y(m)         z(m)       Vx(m/yr)  Vy(m/yr) Vz(m/yr)
 
  JPL93 2003  4086899.547  -370740.405  4866534.033  -0.0142   0.0220   0.0127
 
 
  PINPOINT inputs
  =====================================================================
 
  begindata
 
     SITES                +=      'DSS-59'
     DSS-59_FRAME         =       'ITRF93'
     DSS-59_CENTER        =       399
     DSS-59_IDCODE        =       399059
     DSS-59_EPOCH         =       @2003-JAN-01/00:00
     DSS-59_BOUNDS        =    (  @1950-JAN-01/00:00,  @2050-JAN-01/00:00  )
     DSS-59_XYZ           =    (  4086.899547
                                  -370.740405
                                  4866.534033 )
 
     DSS-59_TOPO_EPOCH    =       @2022-SEP-21/00:00
     DSS-59_UP            =       'Z'
     DSS-59_NORTH         =       'X'
     DSS-59_DXYZ          =    (  -0.0142
                                   0.0220
                                   0.0127 )
 
  begintext