ACE Weekly 01/20/06 - 01/26/06

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

	Type         Attitude
	Date         01/26/06
	DOY          026 2006
	Thrusters    2R 4R+ 4R-
	Duration     9:09 min
	Start Time   17:08:21z
	Stop Time    17:17:30z
	Start HGA    2.44 deg
	Stop HGA     6.54 deg
	Firing       47 pulses

The next attitude maneuver is scheduled for Thursday 02/02/06.

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OCRs:

DOY 024 (01/24/06)  1932-1945z  SIS-036
Recent increases in M12B bias voltage have had positive effect on detector
depletion and resulted in leakage current reduction on four disabled strips
on HV side of Matrix detector M1B. By re-enabling those strips we hope to
recover some geometry factor lost when the strips were disabled.

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Ongoing Activities:

Space Link Extension (SLE) - The first version of ACE SLE was delivered to
the Library on December 14.  The delivery to the ACE MOC will not be until
February.  

RIONet - String 3 is anticipated to move to the RIONet in February.  The
firewalls in the TDF have been scanned, but there were security issues found
during the scan.  The RIONet firewall tests with DTF-21 have been postponed
until the security issues are resolved.

Attitude Training - The FOT continues training on attitude determination,
maneuver planning, and maneuver execution.

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Extra Activities:

None

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Anomalies:

DOY 020 (01/20/06)  G06-0014  DSS-16 XMTR Problem
The transmitter tripped due to a power glitch at DSS-16 which caused a
1.5-minute telemetry drop out.  Uplink was lost when tlm came back online so
DSS-16 did a resweep and the receivers came back in lock a few minutes
laster.  DR G106453.
IMPACT:  Brief tlm drop out.  All data recovered.

DOY 020 (01/20/06)  G06-0015  DSS-46 MPA communications failed
Half of the ranging only pass with DSS-46 was lost due to a Metric Pointing
Assembly (MPA) failure.  DR C104721.
IMPACT:  Lost 30 minutes of ranging data.  Spacecraft Receiver AGC levels
violated the Yellow Low limits.

DOY 025 (01/25/06)  S06-0001  SSCGR20V YL Limit Violation
SSCGR20V had 1 brief yellow low limit violation (YL <= 17V).  
	2006-025 22:53:03 - 22:53:27 17.0
Jim Raines notified. 
IMPACT:  Awaiting instructions from Jim Raines.