ACE Weekly 03/18/2015 - 03/24/2015

ACE spacecraft subsystems are performing as expected.
 
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Orbit/Attitude:

	Type           Attitude
	Date          03/23/2015
	DOY            082 2015
	Thrusters      2R 4R+ 4R-
	Duration      11:03 minutes
	Start          19:44:50z
	Stop           19:54:05z
	ra,decStart     4.59,-11.91
	ra,decStop     12.57,-8.37
	ra,decExpect   12.87,-8.38
	Deviation     0.30deg (-3%)
	HGAStart       -7.50 deg
	HGAStop        +8.71 deg
	SunStart       13.19 deg
	SunStop        18.88 deg
	SpinStart     5.0004 rpm
	SpinStop      5.0055 rpm
	Nutation        0.12 deg
	Firing         47 pulses
	FuelUsed        0.1474 lbm
	FuelRemain     99.5924 lbm
	FinalSCMass   1333.852 lbm

The next attitude maneuver is scheduled for Monday 3/30/2015.

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OCRs:

None
 
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Activities:

Data Capture:  99.97%  DOY 074-081 2015
  DOY 077 05:11:22-05:13:20  119 second gap while catching up on data
  DOY 080 23:11:22-23:19:13   71 second gap while catching up on data

The SSR playback has continued to be behind schedule due to limited
antenna time.  The past week has been lucky with a couple of instances
of being 2-3 hours away from losing 10-20 hours of recorded data.  SSR
playback will be caught up on Friday 3/27/2015.

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Anomalies:

DOY 080  03/21/2015  S-ACE-0696  G15-0005  DSS-65 Equipment Availability
DSN has a limited number of Downlink Channels for processing telemetry
and it is possible to schedule the same equipment for 2 different
missions (AR#119081).  DC01 was scheduled for both ACE and MAVEN
supports.  DR#M108626
IMPACT:  Activities delayed 44 minutes.  Playback of data is behind due
to limited antenna time.  No impact to NOAA SWPC since the spacecraft
was in RTSW during this time.