ACE Weekly 05/28/2014 - 06/03/2014

All ACE spacecraft subsystems are performing as expected.

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Orbit/Attitude:


	Type          Attitude
	Date          06/03/2014
	DOY           154 2014
	Thrusters     2R 4R+ 4R-
	Duration       7:22 min
	Start         18:32:56z
	Stop          18:38:18z
	ra,decStart  76.11,37.59
	ra,decStop   82.17,39.11
	ra,decExpect 82.40,39.11
	Deviation      0.18 deg
	HGAStart     -10.04 deg
	HGAStop      +10.99 deg
	SunStart      15.85 deg
	SunStop       19.19 deg
	SpinStart    4.9946 rpm
	SpinStop     4.9957 rpm
	Nutation       0.07 deg
	Firing        27 pulses
	FuelUsed        0.0901 lbm
	FuelRemain    106.4168 lbm
	FinalSCMass   1341.677 lbm

The next attitude maneuver is scheduled for 06/10/2014.

This attitude maneuver reached the expected target.  The problems that
were seen in May did not occur for this maneuver.  The investigation
continues.

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OCRs:

None

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Activities:

Data Capture:  100%  DOY 145-152 2014

NOAA Space Weather Prediction Center (SWPC) received 2.9 hours of
tracking from AFSCN (148 1220-1515z), which is routed through the MMOC.
The last use of AFSCN was on 5/8/2014, but sent less than 1 minute of
data.  The last successful use of AFSCN was 1/6/2014 (2302-0155z).

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Anomalies:

DOY 148  05/28/2014 S-ACE-0677  G14-0005  DSS-15 Earth Receive Time
DSS-15 Earth Receive Time was behind by 0.275 seconds after the
spacecraft switched to the high data rate (1 frame every 0.091 seconds).
This is an intermittent problem (DR# G114836/AR 118839) with the
Receiver, Ranging, and Telemetry (RRT) software v11.3.6 at Goldstone.
DSN has a workaround for this problem which is to halt and re-acquire
the TLP after the data rate change.  This may not have been performed
for this pass.  An email has been sent to the DSN NOPEs (Network
Operations Project Engineers) informing them of the recurrence.  This
last occurred 5/20/2014.
IMPACT:  Clock report for DOY 148 manually regenerated with bad data
excluded and sent to the ACE Science Center.