ACE Weekly 11/30/2010 - 12/06/2010

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

	Type        Attitude
	Date        12/03/2010
	DOY         337 2010
	Thrusters   2R 4R+ 4R-
	Duration    16:27 min
	Start       21:22:21z
	Stop        21:38:48z
	HGAStart    -7.44deg
	HGAStop     +7.50deg
	SunStart     7.00deg
	SunStop     10.78deg
	SpinStart   5.0733rpm
	SpinStop    5.0779rpm
	Nutation     0.18deg
	Firing      84 pulses
	FuelUsed      0.2610lbs
	FuelRemain  132.2568lbs
	FinalSCMass 1366.517lbs

Due to staffing, Station Keeping #56 was postponed to Monday 12/13/2010
which is also the next attitude maneuver.

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OCRs:

DOY 340 (12/06/2010)   MMOC-232  TAPS Trending Computers Moved to MMOC
The TAPS Trending Computers were moved to the MMOC (TAPS2 on 11/22/2010
and TAPS1 on 12/06/2010).  The computers will not be connected to the
network due to IT Security (old operating system & old java).  The
software was not able to run on newer systems (in particular java).
Telemetry data will be ingested via Compact Discs.

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Activities:

Data Capture:  100%  DOY 332-339 2010

Operations continues on the backup ground system.

DSN has updated their schedule for DCD deployment.  All ACE passes
starting on Friday 12/10/2010 (DOY 344) are expected to be using DSN's
new DCD (Data Capture and Delivery) system.  On Monday 11/29/2010, files
were successfully transferred from DSN's DCD system to the MMOC.

There is a higher than normal risk of data loss from October 2010
through February 2011.  If there are problems with the passes, it may
not be possible to acquire additional DSN time.

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Anomalies:


DOY 335  12/01/2010  S-ACE-0562  G10-0077  DSN Network Problems
At 1656z, Goldstone DSCC LAN switch failed.  No data and voice
connections were reaching JPL, and therefore the MMOC for the remainder
of the pass.  DR#G110816
IMPACT:  No telemetry to the MMOC or DSN's CDR from 1656z to 1855z (End
Of Track).  No real-time data to NOAA Space Weather Prediction Center
for 2 hours.  Science data captured on the following support.


DOY 339  12/05/2010  S-ACE-0563  G10-0078  ITOS tm_controller
Before Beginning Of Track, ITOS had problems connecting telemetry,
"timeout reading from tm_controller".  ITOS was stopped and restarted.
IMPACT:  Manual intervention required.  Activities delayed 40 minutes.