ACE Weekly 08/11/2010 - 08/17/2010

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

	Type        Attitude       SK-55
	Date        08/17/2010     08/17/2010
	DOY         229 2010       229 2010
	Thrusters   2R 4R+ 4R-     3A 4A
	Duration    18:14 min      95.261 sec
	Start       14:40:26z      16:31:35z
	Stop        14:58:40z      16:33:10z
	HGAStart    -8.10deg       +7.64deg
	HGAStop     +7.64deg       +7.69deg
	SunStart     5.11deg       12.14deg
	SunStop     12.14deg       12.08deg
	SpinStart   5.0675rpm      5.0723rpm
	SpinStop    5.0723rpm      5.0475rpm
	Nutation     0.09deg        0.05deg
	Firing      93 pulses      Continuous
	FuelUsed      0.2867lbs      0.3324lbs
	FuelRemain  134.4960lbs    134.1636lbs
	FinalSCMass 1368.756lbs   1368.4236lbs


The next attitude maneuver is scheduled for Tuesday 09/07/2010.

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OCRs:

None

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Activities:

Data Capture:  100%  DOY 220-227 2010
DOY 227 2010 - 256 days of complete playback data capture and counting


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Anomalies:

None

Update on Anomaly S10-0006 (S-ACE-0515) SEPICA Line Pressure
The SEPICA instrument team has concluded that the SEPICA isobutane tank
is probably empty since the SEPICA Line Pressure reached 0psi on DOY 219
0154z (08/07/2010).  Under normal operations, the gas was expected to
last 6-7 years and at most 10 years.  With the closed valves, the gas
has lasted 13 years.
	PC1 valve closed since 02/13/1998
	PC2 valve closed since 11/24/2001
	PC3 valve closed since 02/04/2005