Cassini Significant Event Report

For Week Ending 08/06/99


Spacecraft Status:


The most recent spacecraft status is from the DSN tracking pass on
Thursday, 08/05, over the Canberra tracking station. The Cassini
spacecraft is in an excellent state of health and is operating normally. The speed of the spacecraft can be viewed on the "Where is Cassini Now?" web page (http://saturn.jpl.nasa.gov/operations/present-position.cfm)


On Sunday, 08/01, Trajectory Correction Maneuver 11 (TCM-11) sequence products
were uplinked to the spacecraft.


On Monday, 08/02, TCM-11 executed flawlessly with a delta-v (change in
velocity) of 36.3 m/sec, exactly as designed.


On Tuesday, 08/03, playback of data from TCM-11 concluded, and the 24-hour
Visible and Infrared Mapping Spectrometer (VIMS) decontamination exercise began.

Upcoming events for the period of 08/06 - 08/12 include:


Attitude and Articulation Control Subsystem (AACS) parameter update in
preparation for TCM-12 on 08/06, AACS Active Vector Update prior to closest
approach on 08/09, uplink of the sequences for TCM-12 and beginning of execution
on 08/10, completion of TCM-12 and playback of TCM data on 08/11, and the
VIMS decontamination exercise and uplink of the Earth/Post Earth mini-sequences
on 08/12.



Additional information about Cassini-Huygens is online at http://saturn.jpl.nasa.gov.


Cassini will begin orbiting Saturn on July 1, 2004, and release its piggybacked Huygens probe about six months later for descent through the thick atmosphere of the moon Titan. Cassini-Huygens is a cooperative mission of NASA, the European Space Agency and the Italian Space Agency. JPL, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Office of Space Science, Washington, D.C.


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