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Cassini Update
Cassini Update
13 Jul 2001
(Source: Jet Propulsion Laboratory)

Cassini Weekly Significant Events for 07/05/01 - 07/10/01

The most recent spacecraft telemetry was acquired from the Goldstone tracking station on Monday, July 9. The Cassini spacecraft is in an excellent state of health and is operating normally. Information on the spacecraft's position and speed can be viewed on the "Present Position" web page,

The C27 sequence was uplinked to the spacecraft and began executing this week. Final activities in C26 included a RADAR calibration activity, an AACS reaction wheel unload, and a constraint monitor update. The RADAR activity was completed without incident and matched the results predicted by Integration Test Laboratory (ITL) testing. Initial activities in C27 included power-on of the Composite Infrared Spectrometer (CIRS), loading of Instrument Expanded Blocks for Cassini Plasma Spectrometer (CAPS), Ultraviolet Imaging Spectrometer (UVIS), Radio and Plasma Wave Science (RPWS) and Imaging Science Subsystem (ISS), an RPWS High Frequency Receiver Calibration, an AACS reaction wheel friction test, and clearing of the AACS high water marks. Observations included a Visual and Infrared Mapping Spectrometer (VIMS) Fomalhaut Observation following their Solar Port Calibration, a UVIS Interplanetary hydrogen survey, and CIRS observations of Eta Carinae and VY-Canis Majoris.

Radio Science team personnel met in Rome with a group of engineers from Alenia and a representative from the Italian Space Agency. Discussions centered on the status of the KAT (Ka-Band Translator) anomaly investigation.

ISS conducted an ITL test of various reset modes and Bus Interface Unit conditions to better understand the interaction of instrument flight software and camera operations. Analysis is underway.

Mission Assurance submitted an Abstract for a Risk Management Session at the 2002 meeting of the IEEE. The paper entitled: "Managing Risk During Cassini Mission Operations & Data Analysis" would document the Cassini approach to Risk Management during mission operations, including the use of an on-line risk tracking system and automated metrics generation.

VIMS Flight Software version 4.1 was received by Configuration Management and archived in the Project Software Library.

A Delivery Coordination Meeting was held for CIMS version 1.2. This version of CIMS provided a bulk data import capability (using data formatted with XML).

A June 2001 update of the Integrated Mission Operations Schedule was published to the Cassini Electronic Library (CEL)/Work Area. The schedule now covers the period from Launch through April 2005 and includes sequence development, execution and activities for the first nine tour sequences. Hardcopy distribution at JPL and Distributed Ops sites has begun.

The Native file for Anomaly Response Operations Plan Rev G has been posted to the CEL and the Master Controlled Document List. The Cassini Duty roster for C27 has been updated to reflect changes in the G version.

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.

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Last Updated: 16 Jul 2001