At http://saturn.jpl.nasa.gov/operation...t-position.cfm in the View of Saturn from Cassini, there are orbit lines pasing through the edges of the frame. One is the left side and bottom, the other is the top, bending sharply, and bottom.
What are they? If that's Cassini's own track, I don't see how it can be above and left of it, or why two tracks point paralell. I don't see a similar feature in the other views.