ACE Weekly 06/02/2010 - 06/08/2010

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 Friday 06/11/2010.

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OCRs:

None

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Activities:

Data Capture:  100%  DOY 150-157 2010

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Anomalies:

DOY 153  06/02/2010  S-ACE-0510  G10-0029  DSS-27 Stopped Tracking
DSS-27 stopped tracking 1 hour and 10 minutes before End Of Track (EOT).
Telemetry and Uplink were re-established within 20 minutes.  The SLE
FCLTU state remained ACTIVE, however, commands to DSS-27 via SLE
returned "command negative: unable to process".  The SLE FCLTU needed to
be manually disconnected and reconnected in order to command to the
spacecraft.  Final state-of-health checks successfully performed at 30
minutes before End Of Track.  DR G110282 & G110283
IMPACT:  SSR playback had been completed.  Final state-of-health checks
are not critical and would have been performed on the following pass if
SLE FCLTU had not been manually disconnected/reconnected.


DOY 159  06/08/2010  S-ACE-0511  G10-0030  DSN/Goldstone Power Glitch
DSN/Goldstone experienced a complex wide power glitch at 17:32:18z (1.5
hours after BOT).  Telemetry and Uplink re-established within 10
minutes.  DR G110297
IMPACT:  Minimal.  No manual intervention required.  Final
state-of-health commanding performed at 1900z.  SSR redumps will be
completed on the following pass.