After the Voyager encounters, the possibility of a torus of nitrogen produced by Saturn's moon Titan was proposed. Subsequent observations by the Cassini spacecraft showed no clear evidence of such a torus. While neutral nitrogen could not be measured, the ions near the orbit of Titan were primarily hydrogen or water group (O, OH, H 2 O and H 3 O) from the Enceladus torus. Trace amounts of nitrogen ions were detected but at levels consistent with an Enceladus source.