In an application I have to analyse I found this trajectory description for the space probe cassini, unfortunately header and comments have been removed:

2004 6 01 00.0 16669287.46 -13098482.32 -10225933.05 1313468.24

The file format is .trj / .traj. Supposedly, there was a tool called SKYMAP which created these? I would like to know which tool created this data set. From the source code I gather that the table is in the format

year month day hour ignore x y z

The column ignore is ..ignored. I tried to recreate the output with JPL's horizons system but it does not quite fit.