ACE Weekly 06/13/03 - 06/19/03 All ACE spacecraft subsystems are performing nominally. No attitude maneuvers were performed this week. The next attitude maneuver is scheduled for 06/23/03. ============================================================================ Orbit Events: Currently in SEV transit: Entry: 06/01/03 at 1442Z Minimum angle: 2.18 degrees on 06/13/03 at 1618Z Exit: 06/25/03 at 1652Z On Friday, 6/13/03, DOY 03164, ACE was at the lowest SEZ angle (2.18 degrees) that it has ever encountered for the life of the mission. All telemetry was acquired and there were no problems commanding the vehicle. ============================================================================ OCRs Executed: NONE ============================================================================ Ongoing Activities: TAPS: Trending, Analysis and Plotting System (TAPS) development continues with emphasis being placed on fixing the DRs attributed to the current release. Testing is progressing on both TAPS#1 and TAPS#2. Release 4.1.5 is scheduled for installation on Tuesday, June 24th. ---------------------------------------------------------------------------- Automation (ROBOTT): ROBOTT Release 0.1 was installed on string 2 on 6/19/2003. FOT testing of the release will begin on 6/20/2003. Testing for Command & Control has resumed, the first release to the FOT is still TBD. ============================================================================ Anomalies: DOY 03167 (06/16/2003) - ACE Anomaly Report #G03-0051 GDS 34m (DSS-27) Exciter Problem While performing the prepass briefing, the FOT was notified that the scheduled pass had been switched from DSS-27 to DSS-16 due to transmitter/exciter problems. All nominal pass activities were performed with DSS-16. IMPACT: None. Station switch occurred during Pre-Cal. DR # G102898. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Glen A. Miller ACE Flight Operations Observatory Engineer Honeywell Technology Solutions Inc. Goddard Space Flight Center Building 14, Room W10A Mail Stop 428.2 Greenbelt, MD 20771 Office: 301-286-7071 Pager: 800-425-3174 Fax: 301-286-1729 Email: gamiller@pop500.gsfc.nasa.gov ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~