Instrument Information
INSTRUMENT_ID POS
INSTRUMENT_NAME UNKNOWN
INSTRUMENT_TYPE UNKNOWN
INSTRUMENT_HOST_ID GO
INSTRUMENT_DESC
This is a placeholder file that allows Galileo spacecraft
      trajectory data, derived from SPICE spacecraft and
      planetary ephemeris (SPK) kernels, to be archived as a
      data set with the Planetary Data System (PDS). The PDS
      model requires that a data set be produced by an
      instrument.
REFERENCE_DESCRIPTION Acton, C.H., The SPICE System - A Brief Overview, Navigation and Ancillary Information Facility, JPL, 1994.