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NASA Cassini Significant Events 02/11/09 - 02/17/09

Status Report From: Jet Propulsion Laboratory
Posted: Saturday, February 21, 2009

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The most recent spacecraft telemetry was acquired on Feb. 17 from the Deep Space Network tracking complex at Goldstone, California. The Cassini spacecraft is in an excellent state of health. 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, Feb. 11 (DOY 042)

A two-day NASA Senior Review of a proposal for a Cassini Extended Extended Mission (XXM) concluded today. The review board's comments and questions indicated that they were quite impressed with the science, science team, and technical presentations, and that they understood and appreciated the XXM plans, rationale, and concerns. Within a month the final review board report should be available and some time after that a final decision is expected from NASA Headquarters.

Eight Instrument Expanded Block files in support of S48 were uplinked to the spacecraft today. Proper receipt and registration to the SSR has been verified. The background sequence will go up late Thursday night, and S48 will begin execution next Tuesday.

Thursday, Feb. 12 (DOY 043):

Science Planning has analyzed the Navigation Team's orbit determination solution released last Monday. Based on the results, the live inertial Vector Propagator update currently scheduled for DOY-056 need not be performed. All errors are significantly less than 2.4 mrad. The necessary instrument teams have concurred so the update has been cancelled.

Files were delivered for the second of two input ports as part of the S51 Science Operations Plan process. A merge of all the files will be released tomorrow for team review.

The Composite Infrared Spectrometer (CIRS) observed the rings today for 11 and a half hours at 45 degrees north latitude at high phase. This was part of a paired observation designed to look at both the lit and unlit sides of the rings at similar geometries to study the vertical thermal distribution within the rings. Part two of this observation occurs Saturday where CIRS will observe the rings for 9

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