The most recent spacecraft telemetry was acquired on Aug. 24 from the
Deep Space Network tracking complex at Canberra, Australia. The
Cassini spacecraft is in an excellent state of health and all
subsystems are operating normally. Information on the present
position and speed of the Cassini spacecraft may be found on the
"Present Position" page at:
http://saturn.jpl.nasa.gov/mission/presentposition/.
Wednesday, August 18 (DOY 230)
Today marked the 11th anniversary of Cassini's Earth flyby.
Friday, August 20 (DOY 232)
Spacecraft Operations (SCO) successfully completed real time
commanding to load Command & Data Subsystem (CDS) flight software
(FSW) V10.0 patches. This is the last planned software update for CDS
FSW for the remainder of the Cassini Mission. The command loss timer
will be set back to 110 hours on Sunday.
SCO completed the first long reaction wheel rest period during the
CDS FSW uplink and checkout period. The objective for these wheel
rest periods is to allow for a redistribution of lubricants within
the bearing assemblies. Bearing consultants have recommended this
approach to mitigate against increased friction in the bearings, but
at this point there is still insufficient data to judge the
effectiveness of this plan. Attitude control was switched from
reaction wheels to thrusters on Aug. 18, and switched back to wheels
today.
Monday, August 23 (DOY 235)
The Science Forum for S66 was held today. Topics included an overview
of science planned for this sequence followed by highlights, unique
activities, and highest priority observations as described by the
Target Working Team (TWT) and Orbiter Science Team (OST) leads, with
comments from the Investigation Scientists and other instrument team
representatives.
Tuesday, August 24 (DOY 236)
This week the Radio Science team performed an operational readiness
test with the DSN in preparation for the occultation observation on
Sept. 2. The Magnetospheric and Plasma Science instruments performed
an 11.5 hour survey. The Composite Infrared Spectrometer performed
an 8 hour spectroscopic observation of the infrared star CW Leonis.
The Cosmic Dust Analyzer continued its interstellar dust campaign.
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