ACE Weekly 02/19/2015 - 02/24/2015

ACE spacecraft subsystems are performing as expected.  See below for the discussion of maneuver performance.

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Orbit/Attitude:

	Type           Attitude
	Date          02/24/2015
	DOY            055 2015
	Thrusters      2R 4R+ 4R-
	Duration       10:41 min
	Start          16:13:24z
	Stop           16:24:05z
	ra,decStart   326.97,-25.06
	ra,decStop    334.97,-23.83
	ra,decExpect  337.91,-22.36
	Deviation     3.08deg(-29%)
	HGAStart       -9.44 deg
	HGAStop        +8.45 deg
	SunStart       18.50 deg
	SunStop        14.62 deg
	SpinStart     4.9962 rpm
	SpinStop      4.9997 rpm
	Nutation        0.10 deg
	Firing         54 pulses
	FuelUsed        0.1673 lbm
	FuelRemain    100.3484 lbm
	FinalSCMass   1334.608 lbm

We expect the nitrogen in the internal lines to eventually be purged in the next 1-2 weeks.  The next attitude maneuver is scheduled
for Tuesday 3/3/2015.  The next station-keeping maneuver is scheduled for Friday 3/13/2015.

With the nitrogen being expelled instead of fuel, we estimate that the reported fuel used over the past 12 months (8.30 lbm; 3.76kg)
is around 5-10% more than what was probably used (~7.5 lbm; ~3.4kg).  This deviation corresponds to ~1 month's fuel usage.  The
reported remaining fuel may be adjusted in the future.

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OCRs:

None

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Activities:

Data Capture:  100%  DOY 046-053 2015

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Anomalies:

None