Mime-Version: 1.0
Date: Fri, 16 Jul 1999 11:11:35 -0400
To: mmachado@pop500.gsfc.nasa.gov, dmyers@pop500.gsfc.nasa.gov, ccazeau@pop500.gsfc.nasa.gov, jmaldona@pop500.gsfc.nasa.gov, bpickrel@pop500.gsfc.nasa.gov, dmalone@pop500.gsfc.nasa.gov, pdouglas@pop500.gsfc.nasa.gov, tafkhami@pop400.gsfc.nasa.gov, jameraul@pop400.gsfc.nasa.gov, gkinnama@pop500.gsfc.nasa.gov, tbevilacqua@hotmail.com, rsodano@pop500.gsfc.nasa.gov, whitec@thorin.atsc.allied.com, william.worrall@gsfc.nasa.gov, enace@pop500.gsfc.nasa.gov, ad@srl.caltech.edu, steves@srl.caltech.edu, msuarez@pop800.gsfc.nasa.gov, ngilotra@csc.com, btucker2@csc.com, cchang8@csc.com, csprouse@cscmail.csc.com, erc@cosmicra.gsfc.nasa.gov, carline.cazeau@alliedsignal.com
From: Mike Machado <mmachado@pop500.gsfc.nasa.gov>
Subject: ACE Weekly 7_15_99

Current spacecraft and ground system status is nominal.

Executed successful attitude maneuver on Friday, July 9th.
Maneuver Start Time=15:51:54     Maneuver End Time=15:57:09
Pre-Maneuver    HGA = ___-2.43___________     Sun Angle =  ___6.48__________
Post-Maneuver   HGA = ____4.4____________     Sun Angle =  __12.50__________
Current S/C range:    __1,552,880______  km

On July 11th, Performed Block Bin dumps (0-127) on Active CDH A only.  0
bytes miscompared. This validated Ground Reference Image with what is on
the S/C.

Team reviewed preliminary RCCA involving SWEPAM loss of ~4 days of science.
Further analysis and revision is required.

Anomalies:
7/9/99 AR# G99-0044   ISIS Software Crash. Experienced 15 minute telemetry
drop.

7/12/99 Unable to generate GTAS plots before pass.  Workstation AC1WS1
found to have two bad memory (RAM) modules after the pass.  Called
maintenance; meanwhile the workstation is still usable with reduced memory.
However, this could cause problems using workstation for maneuver on
7/16/99. NOTE: ( Memory fixed 7/16/99 prior to maneuver).


==========================================================================
Michael J. Machado
Realtime Operations Supervisor/ Technical Lead Engineer
Advanced Composition Explorer Flight Operations Team
http://acefot1.gsfc.nasa.gov/ACE_MOC_HOME.html
AlliedSignal Technical Services Corporation
corp. email: machadm@thorin.atsc.allied.com
phone: (301)286-7071  pager: (301)708-8272   fax: (301)286-0218
email: mmachado@pop500.gsfc.nasa.gov
==========================================================================