http://saturn.jpl.nasa.gov/mission/flybys/titan20090403/

Titan Flyby (T-52) - April 3, 2009
Cassini

The Radio Science Subsystem (RSS) observes atmospheric and ionospheric occultations during this Titan flyby. This is the first near-equatorial RSS occultation in the mission. The Ultraviolet Imaging Spectrograph (UVIS) watches Titan occult the star Alpha Eri. Earlier, RADAR gets good northern polar coverage, helping to fill in a gap in the brightness temperature map.

Unlike other flybys, this encounter is set up with only one maneuver: a combined post-flyby cleanup/Titan approach maneuver, scheduled for March 29. The flyby is unique because this "rev" is a circular orbit. With the short interval between T51 and T52, the Navigation team has scheduled four different opportunities for this important maneuver.

Titan Flyby
April 4, 2009 (SCET)

Altitude
4150 kilometers (2600 miles)

Speed
5.8 km/sec (13,000 mph)

Details
+ Mission Description PDF (2.4 MB)
http://saturn.jpl.nasa.gov/files/20090403_titan_mission_description.pdf