ACE Weekly 10/28/2009 - 11/03/2009

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

	Type        Attitude
	Date        10/30/2009
	DOY         303 2009
	Thrusters   2R 4R+ 4R-
	Duration    12:38 min
	Start       15:24:18z
	Stop        15:36:56z
	HGAStart    -5.49deg
	HGAStop      7.90deg
	SunStart    15.49deg
	SunStop      5.62deg
	SpinStart   5.0269rpm
	SpinStop    5.0295rpm
	Nutation     0.12deg
	Firing      64 pulses
	FuelUsed      0.2052lbs
	FuelRemain  140.1112lbs
	FinalSCMass 1374.371lbs

The next attitude maneuver is scheduled for Thursday 11/12/2009.

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OCRs:

None

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Activities:

Data Capture:  100%  DOY 298-305 2009

DOY 302 10/29/2009 - DSN TTC v9.1 Test - DSS-27
DSN's will be implementing a TTC (Tracking, Telemetry and Command)
software upgrade (v9.1).  The ACE MOC was used to test the new TTC.  The
test was delayed 23 minutes due to communications problems with the APC
(Antenna Pointing Controller).  The test was performed with the
remaining 22 minutes.  No problems were uncovered during the 45 minute
demo.  Note, the last TTC test with ACE was the v8.1.4 test on
09/24/2008.


DOY 307 11/03/2009 - Multi-Mission Operations Center (MMOC) Test
There were no problems receiving telemetry or sending commands with
DSS-27.  The spacecraft was commanded to high-rate and SSR data from the
previous pass was redumped.  The RIONet gateway request for data
forwarding to the ACE Science Center test port was finally implemented.
ACE real-time data was successfully processed by ASC.  As usual, NOAA
Space Weather also received the real-time data without problems.
Another "St9bad_alloc" error occurred on the backup workstation
(MMOCOPS1B).  This error has not been found on the other 2 workstations
(MMOCOPS1P and MMOCTC4).


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Anomalies:

DOY 301  10/28/2009  S-ACE-0468  G09-0057  DSS-27 Tracking Issues
DSS-27 was unable to bring the ground antenna to point at Beginning Of
Track due to problems with the Antenna Servo Drives.  The station
performed several resets and was finally able to bring the antenna to
point.
IMPACT:  Activities delayed 15 minutes.