ACE Weekly 05/22/2012 - 05/28/2012

All ACE spacecraft subsystems are performing as expected.

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Orbit/Attitude:

	Type        Attitude       SK-61
	Date        05/25/2012     05/25/2012
	DOY         146 2012       146 2012
	Thrusters   2R 4R+ 4R-     1A 2A
	Duration    16:18 min      54.715 sec
	Start       15:24:54z      16:49:37z
	Stop        15:41:12z      16:50:32z
	HGAStart    -7.83deg       +7.81deg
	HGAStop     +7.81deg       +7.71deg
	SunStart     4.87deg       15.20deg
	SunStop     15.20deg       14.96deg
	SpinStart   5.0632rpm      5.0680rpm
	SpinStop    5.0680rpm      5.0503rpm
	Nutation     0.08deg        0.29deg
	Firing      83 pulses      Continuous
	FuelUsed      0.2515lbs       0.1907lbs
	FuelRemain  121.5952lbs     121.4044lbs
	FinalSCMass 1355.855lbs     1355.665lbs

The next attitude maneuver is scheduled for Thursday 06/07/2012.

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OCRs:

None

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Activities:

Data Capture:  100%  DOY 141-148 2012

WS1, the 18-meter antenna in White Sands, NM, has fixed the command
issue with changes to their PTPs (Programmable Telemetry Processors,
which are also used for the command connection).  Previously, the MMOC
needed to disconnect & reconnect in-between sending commands.  There
were no problems with commanding during the WS1 test on Thursday
5/24/2012.  The MMOC is currently updating procedures and tools for use
with WS1.  A review will be given to SSMO management after the
procedures and tools have been updated.


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Anomalies:

Update on AR#S12-0001  S-ACE-0639  SWEPAM-E Overcount Alarm
The SWEPAM-Electron Overcount Alarm flagged continuously from DOY 135 to
144 and intermittently (sometimes continuously) from DOY 144 to 148.  It
stopped flagging on DOY 148.  The instrument team is working the next
course of action, but their time is limited.  IMPACT:  The instrument
automatically reduces voltages when the overcount alarm occurs.