December 4, 2008
Cassini swoops down to 960 kilometers (597 miles) over Titan's surface, providing the Ion and Neutral Mass Spectrometer (INMS) with its only dayside pass over the equator during the mission. Taking advantage of this low altitude, INMS will sample Titan's ionosphere. RADAR will capture a Synthetic Aperture Radar Imager (SAR) swath over the Tui Regio area of Xanadu. Visual and Infrared Mapping Spectrometer (VIMS) observations suggest that, like Hotei Arcus, Tui Regio may be connected to cryovolcanism.