Cassini Significant Event Report

For Week Ending 07/07/00

The most recent spacecraft telemetry was acquired from the
Goldstone tracking station on Wednesday, 07/05. 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.


Activities this week included a RADAR checkout (with MAG riding along) that
was completely nominal and a Reaction Wheel momentum unload. Two X-Band
uplink demonstration activities using the DSS-14 70m antenna were
performed.


IO-ISS and MIPL (multimission image processing laboratory) performed an
internal "end-to-end" test of a major portion of the MIPL ISS Uplink
Processing System with a successful match between the uplink and downlink
catalogs.


ISS has completed their part in the C22 ITL test. The test data are still
being analyzed, but all indications show the test was a success for ISS.


VIMS data cubes during the C20 sequence were generated using both the old
and upgraded instrument flight software. All activities executed properly
and demonstrated that the new code to correct and enhance the mirror
positioning of the Visible channel worked as expected.


Effective when the next Mission Plan update is released (~14 July 2000),
the Orbital Cruise Activity Handbook will be retired. Any uncompleted or
continuing OCAH activities will be captured in an appendix to the Mission
Plan, and will not be under change control.


Attitude Control delivered Version A8.1.0 of its flight software for
subsystem testing. This version supports the critical sequence development
and orbital operations.



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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Jet Propulsion Laboratory

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Technology


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Administration


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Telephone (818) 354-5011





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