Cassini Significant Event Report

For Week Ending 03/26/99

Spacecraft Status:

The most recent spacecraft status is from the DSN tracking pass on
Thursday, 03/25, over the Goldstone 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 (

Spacecraft Activity Summary:

On Monday, 03/22, a software update for the Cosmic Dust Analyzer (CDA) was
uplinked to the spacecraft. Successful implementation was confirmed via
memory readout.

On Tuesday, 03/23, the Solid State Recorder (SSR-B) record and playback
pointers were reset.

On Wednesday, 03/24, CDA was successfully powered on per plan and the
telemetry rate changed to allow for the return of CDA science data.
Telemetry changes to allow for CDA science data return will now occur
approximately once a week continuing through the C16 sequence.

Upcoming events:

Activities scheduled for the week of 03/26-04/01 include uplink of the CDA
flight software update to all SSR FSW partitions, set of equivalent bit,
and telemetry change on 03/30, SSR Pointer Reset and Flight Software
Partition Maintenance on 03/30.

Additional information about Cassini-Huygens is online at

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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