ACE Weekly 05/03/2011 - 05/09/2011

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

	Type        Attitude
	Date        05/09/2011
	DOY         129 2011
	Thrusters   2R 4R+ 4R-
	Duration    17:22 min
	Start       15:36:24z
	Stop        15:53:46z
	HGAStart    -7.40deg
	HGAStop     +7.60deg
	SunStart    10.79deg
	SunStop      5.84deg
	SpinStart   5.0815rpm
	SpinStop    5.0862rpm
	Nutation     0.05deg
	Firing      89 pulses
	FuelUsed      0.2747lbs
	FuelRemain  129.1308lbs
	FinalSCMass 1363.391lbs

The next attitude maneuver is scheduled for Tuesday 05/17/2011.

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OCRs:

None


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Activities:

Data Capture:  100%  DOY 121-128 2011

DOY 125 05/05/2011 - DSS-24 Return To Service Demo
Telemetry was successfully received.  Uplink was delayed 1hr 25min due
to transmitter problems (DR#G111452).  The spacecraft was commanded to
high-rate.  DSS-24 unable to process telemetry for 18 minutes due to an
incorrect telemetry modulation index at the station.  No data forwarding
to NOAA Space Weather during this time.  No further commanding performed
during this demo.


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Anomalies:

DOY 124  05/04/2011  S-ACE-0608  G11-0035  UPS Circuit Breaker Tripped
The circuit breaker for Uninterruptible Power Supply#6 Panel#PP2-A12
Circuit#13 tripped off at 1305z.  Computers MMOCOPS1P and MMOCTC4 lost
power.  The circuit breaker was switched back on at 2020z and the
computers were powered back on.  The mounting of the Eaton's Pulizzi
Automatic Transfer Switches (MOCR-0280) was scheduled for that day, but
work had not yet started in the MMOC when this happened (9:05am local
time).
IMPACT:  Operations is currently running on MMOCOPS1B and was
unaffected.