This blog follows the progress of the LRO mission through Integration and Testing at NASA's Goddard Space Flight Center and launch site processing at KSC\Astrotech. Its purpose is to enable communication to the entire LRO Team about the status of ongoing activities.

LRO was launched June 18th, 2009 at 5:32pm EDT from KSC. This BLOG will follow the progress of the mission as LRO travels to the Moon and establishes orbit around it.

This BLOG will be periodically updated during LRO's early mission but as the nominal mission unfolds the official NASA LRO website and the LRO Science Instrument's own websites will evolve into a more interesting sources of LRO science results as postings appear there first and LRO engineering and operations (source of this site) will become increasingly routine.

Tuesday, June 23, 2009

LRO Status 5:00pm EDT 6/23/2009


LRO remains in orbit around the Moon. Everything continues to unfold according to our timeline with the exception of a transition to Sun-Safe Mode (safe-mode for LRO) at 11:50 am when AP22 (Action Point for Attitude Error) tripped. This was diagnosed as being caused by a bad Star tracker solution due to partial occultation by the Moon, the valid but incorrect quaternion caused the spacecraft to slew which in turn tripped AP22 due to attitude error. Normally the Kalman Filter would filter this out but at the time we were still checking out the Kalman Filter performance and were not yet controlling with it. By 12:28 pm EDT we were back in Observing Mode and by 2:00pm we had LEND and CRaTER back on. The GN&C team will issue a more complete report when the finish reviewing all the telemetry.

LOI-2 is scheduled for 6:56am on Wednesday 6/24/2009.
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