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Posted by baalke on October 12, 2007, 1:31 pm
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Cassini Significant Events
for 10/03/07 - 10/09/07
The most recent spacecraft telemetry was acquired on Tuesday, Oct. 9,
from the Goldstone tracking complex. 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/operations/present-position.cfm.
Wednesday, Oct. 3 (DOY 276):
Science activities this week included a Composite Infrared
Spectrometer
(CIRS) determination of upper troposphere and tropopause temperatures
with spatial resolution of about two degrees, along with F-ring
monitoring. Science activity will be paused during the upcoming flight
software upload and checkout.
Thursday, Oct. 4 (DOY 277):
On Oct. 3-4, Cassini Outreach participated in Science and Technology
Education Partnership (STEP) 8 for the Riverside Department of
Education. STEP holds an annual event that brings community science
and
technology companies such as Southern California Edison, Kaiser Health
Foundation, and JPL together to introduce students from Riverside
schools to technical careers. Over 5,000 students in grades K-12
attended the 2-day event.
Friday, Oct. 5 (DOY 278):
A Solid State Power Switch (SSPS) trip occurred today on the CIRS
decontamination heater #2, while it was OFF. The SSPS trip algorithm
cleared the trip. SSPS trips are believed to be caused by galactic
cosmic rays and are predicted to occur at a rate of about two per
year.
This trip was number 22 in 10 years of flight.
Orbit Trim Maneuver (OTM) #131 was performed today. This is the
cleanup
maneuver following the Titan 36 encounter on Oct. 2. The main engine
burn began at 11:45 AM PDT. Telemetry immediately after the maneuver
showed the burn duration was 8.17 seconds, giving a delta-V of 1.3
m/sec. All subsystems reported nominal performance after the maneuver.
Cassini Outreach and the Language Arts curriculum development team
attended the annual International Storytelling Festival in Jonesboro,
Tennessee.
Monday, Oct. 8 (DOY 281)
Command and Data Subsystem (CDS) V10 flight software (FSW) activities
continued this week. Last Friday, sequence leads uplinked a mini-S34
background sequence to run for the next two weeks in support of the
CDS
flight software checkout. On Sunday, Oct. 7, at the end of part A of
S34, instruments were either put in a sleep state or powered off. Next
the V10 FSW was loaded to the online CDS-A. Today via a string swap,
CDS-A with the V10 FSW was made prime and CDS-B was made online.
Tuesday
will be a day of no additional FSW activities as the Spacecraft
Operations team observes Cassini and monitors telemetry.
Outreach will be presenting a poster session and support the JPL
outreach booth at the week long Division of Planetary Sciences (DPS)
meeting in Orlando, FL. For the DPS meeting, the Cassini Media
Relations
office coordinated a news briefing for today where several science
team
members presented the latest Iapetus results. A second briefing will
occur Thursday where RADAR will release an update to the Titan North
Polar Mosaic. Also presented will be a Radar image from the Oct. 2nd
Titan flyby, showing lakes on the moon's south polar region. To see
the
full Iapetus news release link to:
http://saturn.jpl.nasa.gov/news/press-release-details.cfm?newsID=779
Tuesday, Oct. 9 (DOY 282)
Andrew P. Ingersoll, Cassini imaging scientist from the California
Institute of Technology, has been awarded the 2007 Gerard P. Kuiper
Prize by the Division for Planetary Sciences of the American
Astronomical Society in honor of his outstanding contributions to
planetary science. The full news release may be found at:
http://saturn.jpl.nasa.gov/news/press-release-details.cfm?newsID=781
Wrap up:
Check out the Cassini web site at http://saturn.jpl.nasa.gov for
the lat est press releases and images.
The Cassini-Huygens mission 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, manages the Cassini-Huygens mission for
NASA's Science Mission Directorate, Washington, D.C. JPL designed,
developed and assembled the Cassini orbiter.
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