The SpaceHunk appears to be a debris chunk of the SJ Sathanas juggernaut. Though it does not appear to have any purpose, and did not appear in any FreeSpace missions, it was included in the FreeSpace retail tables. Its purpose remains a mystery. It should be noted that there is a docking point on the model.
If it is ever destroyed, stay away from it; its blast radius and shockwaves are the same as the actual SJ Sathanas.
FS2 Tech Room Description
It's a piece.
|Max Velocity||25.0 mps|
|Max Afterburner Velocity||N/A|