 the 
                  object identified by `body'. 
 
   frame          NAIF name for a reference frame relative to which 
                  the state information for `body' is specified. 
 
   first, 
   last           Start and stop times of the time interval over 
                  which the segment defines the state of `body'. 
 
   segid          Segment identifier.  An SPK segment identifier may 
                  contain up to 40 characters. 
 
   intlen         Length of time, in seconds, covered 