22 Jun 2001
(Source: Jet Propulsion Laboratory)
Cassini Weekly Significant Events for 06/14/01 - 06/20/01
The most recent spacecraft telemetry was acquired from the Goldstone tracking station on Wednesday, June 20. 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, http://www.jpl.nasa.gov/cassini/english/where/.
Recent spacecraft activities included two clears of the Attitude and Articulation Control Subsystem (AACS) high water mark, a Magnetospheric Imaging Instrument (MIMI) Low Energy Magnetospheric Measurement Subsystem exercise, and a Radio and Plasma Wave Science (RPWS) high frequency receiver calibration. A Periodic Engineering Maintenance activity was also conducted, which included exercising the Engine Gimbal Assembly and routine maintenance on both the Reaction Wheel Assembly #4 and Backup ALF Injector Loader. Additionally, a test of the Huygens Probe S-Band transmitter was performed, which included checking performance of both the A and B chains of the Probe Support Avionics.
The Sequence Virtual Team has begun preparations for sequence testing in the Integration Test Laboratory in support of the C27 Probe mute test.
The Cassini Program Science Group began a week-long meeting in Oxford, England. In addition to science discipline working group meetings and instrument reports, topics of discussion include progress of the Huygens Recovery Task Force and Science Operations Plan development.
The Mission Planning team began a detailed assessment of Titan flyby minimum altitudes. Use of reaction wheel and thruster control, and the resulting hydrazine consumption are among the topics to be considered.
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 Mission to Saturn and Titan
Jet Propulsion Laboratory
California Institute of Technology
National Aeronautics and Space Administration