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Cassini Weekly Significant Events
for 02/27/03-03/05/03

The most recent spacecraft telemetry was acquired from the Goldstone
tracking station on Wednesday, March 5. The Cassini spacecraft is in 
an excellent state of health and is operating normally. Information on 
the present position and speed of the Cassini spacecraft may be found 
on the "Present Position" web page located at
http://saturn.jpl.nasa.gov/operations/present-position.cfm .

Attitude Control Subsystem (ACS) Flight Software (FSW) checkout 
continued this week with the following activities uplinked and 
executed:  calibration of inertial reference unit-A, a 7COAST 
demonstration with rates, star ID suspend demo with rates, checkout of 
sun sensor assembly-B, several high water mark clears, and fault 
protection log pointer resets. Playback data from off-track activities 
has been received.  Everything looks normal, and detailed analysis 
continues.  An inertial reference unit-B checkout and calibration 
activity was also uplinked for execution next week.

The project held a final uplink approval meeting for the Command and 
Data Subsystem (CDS) flight software checkout activities. Procedures 
and files for the checkout were approved, with uplink and checkout 
activities to begin on March 24.

Preliminary port three for Science Operations Plan implementation of 
tour sequences S15/S16 occurred this week.  The third and final input 
port occurs next week. Additionally, all teams have been reviewing the 
first official merged sequence for S17/S18.

The Science Planning Team process for C37 concluded this week with the
delivery of the port two products and the handoff package to the 
Sequence team.  Subsequence generation for C37 began with a kick-off 
meeting held on Tuesday.

The March Instrument Operations working group meeting featured a 
SEQ_CONVERT tool tutorial by the Mission Sequence Subsystem 
development team.

System Engineering has created a web page to assist with tour 
Verification and Validation activities.  The site will contain links 
to various matrices, templates, and documentation in support of V&V.  
Also posted will be materials presented at last week's Cassini Design 
Team meeting including a detailed uplink system V&V schedule, and the 
uplink V&V kickoff agenda.

Delivery coordination meetings (DCM) were held for Version 9 of the 
Mission Sequence Subsystem, and the Instrument Operations Science 
Operations and Planning Computer (SOPC) Broadcast Keep-Alive scripts. 
A number of the keep-alive utilities have been updated due to changes 
in the Deep Space Mission Services firewall.

The Jupiter Magnetosphere Synchrotron Radiation experiment was noted 
in the February 2003 "APS News," a publication of the American Physics 
Society, as a significant Astrophysics event of 2002.  Even though the 
Cassini RADAR is not mentioned by name, it was the radiometer 
instrument that collected the raw data for the experiment.

The educators and youth section of the Saturn Observation Campaign 
(SOC) website has been updated to include program details, links to 
appropriate activities, and supporting information for youth leaders 
and classroom educators. The site can be accessed at:
http://soc.jpl.nasa.gov/educators.cfm

Cassini is a cooperative project of NASA, the European Space Agency 
and the Italian Space Agency. The Jet Propulsion Laboratory, a 
division of the California Institute of Technology in Pasadena, 
Calif., manages the Cassini mission for NASA's Office of Space 
Science, Washington, D.C.

Cassini Outreach
Cassini Mission to Saturn and Titan
Jet Propulsion Laboratory
California Institute of Technology
National Aeronautics and Space Administration

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