ACE Weekly 03/13/2013 - 03/19/2013

All ACE spacecraft subsystems are performing as expected.

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Orbit/Attitude:

	Type        Attitude
	Date        03/19/2013
	DOY         078 2013
	Thrusters   2R 4R+ 4R-
	Duration    8:12 min
	Start       14:53:44z
	Stop        15:01:56z
	HGAStart    -8.50deg
	HGAStop     +8.94deg
	SunStart    18.06deg
	SunStop     13.80deg
	SpinStart   5.0869rpm
	SpinStop    5.0887rpm
	Nutation     0.16deg
	Firing      42 pulses
	FuelUsed      0.1349lbm
	FuelRemain  115.6544lbm
	FinalSCMass 1349.914lbm

The next attitude maneuver is scheduled for Tuesday 03/26/2013.  Station
Keeping maneuver #65 is scheduled for Tuesday 04/02/2013.

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OCRs:

None

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Activities:

Data Capture:  100%  DOY 069-076 2013

No significant impact from the moderate coronal mass ejection this past
weekend (3/15-3/19).  The ULEIS instrument closed its shutter for 24
hours during the storm.

ULEIS has had 6 shutter movements (including these 4) so far in 2013.
In 2012, there were 36 ULEIS shutter movements during 10 solar storms.

	Sun Mar 17 2013, DOY 076 03:27:59z closed to 25%
	Sun Mar 17 2013, DOY 076 05:31:43z closed to 6%
	Mon Mar 18 2013, DOY 076 01:28:31z opened to 25%
	Mon Mar 18 2013, DOY 076 03:34:23z opened to 100%


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Anomalies:

None

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Average Sun Angles With Weekly Attitude Maneuvers

Dates         Avg Sun    Avg SEV   Sun-SEV (indicates extra s/c tilt)
-----------   -------    -------   ----------------------------------
10/18-10/23   11.0deg     5.1deg    5.9deg
10/23-10/28    9.3deg     3.3deg    6.0deg
10/28-11/06    7.3deg     2.0deg    5.3deg
11/06-11/13    8.4deg     3.8deg    4.6deg
11/13-11/20   10.3deg     6.3deg    4.0deg
11/20-11/27   12.7deg     8.6deg    4.1deg
11/27-12/04   14.9deg    10.1deg    4.8deg
12/04-12/11   16.0deg    10.9deg    5.1deg
12/11-12/18   16.8deg    11.3deg    5.5deg
12/18-12/27   16.5deg    10.7deg    5.8deg
12/27-01/03   16.0deg     9.1deg    6.9deg
01/03-01/08   15.2deg     7.2deg    8.0deg
01/08-01/15   13.8deg     6.0deg    7.8deg
01/15-01/22   12.3deg     4.0deg    8.3deg
01/22-01/29   10.6deg     2.4deg    8.2deg
01/29-02/05    9.1deg     3.2deg    5.9deg
02/05-02/12    8.4deg     5.1deg    3.3deg
02/12-02/19   12.2deg     7.0deg    5.0deg
02/19-02/26   14.3deg     8.8deg    5.5deg
02/26-03/05   15.6deg    10.4deg    5.2deg
03/05-03/12   16.1deg    11.0deg    5.1deg
03/12-03/19   16.1deg    11.0deg    5.1deg