ACE Weekly 06/10/2009 - 06/16/2009

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

No maneuvers were completed this week.  The next attitude maneuver is
scheduled for Wednesday 06/17/2009.  Station-Keeping#51 is tentatively
scheduled for Thursday 06/25/2009.

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OCRs:

None

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Activities:

Data Capture:  100%  DOY 158-165 2009


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Anomalies:

DOY 160  06/08/2009  S-ACE-0447  G09-0042  Intermittent & Duplicate Data
Intermittent VC2 data was received at the ACE MOC starting at 1658z
(BOT=1645z).  The problem appears to have been a network problem.
Intermittent VC2 data stopped at 1700z and duplicate VC2 data was
received until 1703z.  The CDR file was unaffected.
IMPACT:  Minimal.  The intermittent data was automatically redumped.
TAPS and data capture statistics did not correctly process the duplicate
data.  The CDR file was downloaded to cover the duplicate data time
period.

DOY 164  06/13/2009  S-ACE-0448  G09-0024  TPOCC/OS Bitbucket Error
The HPUX operating system occasionally returns a bitbucket error when
the TPOCC ground software executes a unix program.  The ROBOTT
automation software is designed to continue through the error.  Usually
this is not a problem, but on this occasion the procedure continued
before the SSR redumps had been calculated.  One redump (network loss)
was completed on the following pass.
IMPACT:  Minimal.  This last occurred 04/15/2009 (AR#G09-0024)