ACE Weekly 02/15/2011 - 02/21/2011

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

No maneuvers were performed this week.  The next attitude maneuver and
station keeping #57 are scheduled for Friday 02/25/2011.

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OCRs:

None


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Activities:

Data Capture:  100%  DOY 044-051 2011


February 23 (DOY 054) marks the 1-year anniversary of ACE operations in
the Multi-Mission Operations Center (MMOC).


NOAA Space Weather Prediction Center (SWPC) does not have a backup
antenna.  NOAA SWPC currently has antenna time with NICT (Japan), DLR
(Germany), and Wallops (Virginia).  NICT's antenna will be down on 2/20,
2/23, 2/24, 2/25 and 3/6 for maintenance.  The network connection to the
Air Force Satellite Control Network (AFSCN) was lost on September 1,
2010 with the closing of the Onizuka Air Force Base.  There are plans to
add a network through Vandenberg Air Force Base, but that has not yet
been implemented.  Note, the NOAA SWPC operations are separate from the
Goddard flight operations, but this information is worth noting and
therefore included in this weekly report.

The gaps in NOAA/ACE space weather data can be seen at
	http://www.swpc.noaa.gov/ace/MAG_SWEPAM_7d.html
	http://www.swpc.noaa.gov/ace/EPAM_7d.html
	http://www.swpc.noaa.gov/ace/SIS_7d.html


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Anomalies:

WIND anomalies reported when they would affect ACE.

DOY 047  02/16/2011  S-WIND-0413          ITOS tm_controller
Before Beginning Of Track, ITOS had problems connecting telemetry,
"timeout reading from tm_controller".  ITOS was stopped and restarted
and the WIND pass was taken successfully.  CDSID#00027515  Having ITOS
continually "acquired" on a telemetry source has not been prevented the
tm_controller problem.
IMPACT:  Manual intervention required.


DOY 048  02/17/2011  S-ACE-0585  G11-0013  DSS-65 Unable to Move
The ground antenna was unable to move to position at Beginning Of Track
(BOT).  The pointing predicts file was empty and the Antenna Control
Assembly (ACA) was frozen.  The ACA was rebooted and the pointing
predicts were properly distributed.  DR#M106162
IMPACT:  Activities delayed 30 minutes.  No impact to NOAA Space Weather
Prediction Center (SWPC).  The spacecraft was in RTSW format during this
time.