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Cassini Update - November 7, 2003

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Old November 7th 03, 08:15 PM
Ron Baalke
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Default Cassini Update - November 7, 2003

Cassini Significant Events
for 10/30/03 - 11/05/03

The most recent spacecraft telemetry was acquired from the Goldstone
tracking station on Wednesday, November 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/operation...t-position.cfm .

On-board activities this week included Radio and Plasma Wave Science
(RPWS) high frequency receiver calibrations, uplink of an RPWS
Instrument Expanded Block (IEB) load test, a command to halt the Cosmic
Dust Analyzer (CDA) IEB in slot 2, a Magnetospheric Imaging Instrument
data rate throttle down, and execution of an X-band body vector table

The University of Iowa has released additional information regarding
RPWS recordings of the sound of one of the largest solar flares seen in
decades as it moved outward from the sun. The radio wave burst was
recorded Tuesday, October 28, by Cassini. The radio waves, moving at the
speed of light, took just 69 minutes to reach the spacecraft, currently
some 8.7 Astronomical Units (AU) distant from Earth. One AU is
approximately 150 million kilometers.

Port #1 analysis of the Science Operations Plan Implementation for tour
sequences S05 and S06 was completed. A number of problems were found
that will need to be resolved by the final input port in mid November.

The Program conducted the Saturn Orbit Insertion (SOI) Risk Review on
Thursday, 10/30. This was an external review convened to assess the
risks and risk mitigation measures associated with a successful Saturn
orbit insertion. The board was comprised of independent reviewers from
JPL, other NASA agencies, industry, and private consultants. Closing
comments from the board were very positive.

All teams and offices participated in this month's NASA Quarterly

An informal peer review was held for the Cassini Archive Tracking System
(CATS). Software design and technologies were discussed with
representatives from JPL's section 382 and the Planetary Data System who
made recommendations to the development team.

Visual and Infrared Mapping Spectrometer personnel conducted a ground
acceptance test of their instrument flight software version 8.1. The
spectral summing capability worked flawlessly. Regression testing will
now begin.

The Multi Mission Image Processing Laboratory reprocessed many Imaging
Subsystem (ISS) Narrow-angle calibration files from pre-launch data. A
correction step was added to eliminate anti-blooming artifacts that
won't show up in flight data. The reprocessed data have been delivered
to the ISS Science Team.

CDA flight software V 9.2.0 was delivered to the project software
library. Preliminary Alf_Tool checks indicate no errors. A Software
Requirements and Certification Review is to be scheduled in mid-November
with an uplink date set for mid-January 2004.

A Delivery Coordination Meeting was held for Spacecraft Operations
Office (SCO) Solaris 9 tools. Most of the items being delivered were
ports of existing tools to the new operating system. The delivery
included Propulsion Tools V3.0, High Gain Antenna Tools 10.0, Maneuver
Automation Software 4.0, MPLOT 1.6, and Telecom Forecaster Predictor

Bookmarks announcing Cassini's elementary school education program
"Reading, Writing, and Rings" are available through the Cassini Outreach
Office for distribution at education conferences and classrooms. Both
Spanish and English versions are available.

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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