ACE Weekly 11/21/03 - 11/27/03 All ACE spacecraft subsystems are performing nominally. A successful stationkeeping/attitude maneuver was executed 11/21/03. The next attitude maneuver will occur on 12/03/03. ============================================================================ Orbit Events: The SEZ transit has begun. Its particulars remain basically the same as previously given. Closest angular approach to the Sun will be approximately 0.58 degree closer than the September transit, which was 1.76 deg. To summarize the 24-day transit by epoch and SEV angle: 26 Nov 20:56Z 4.75 deg (inbound) 5 Dec 01:22Z 2.0 deg 8 Dec 18:17Z 1.19 deg (minimum) 12 Dec 19:27Z 2.0 deg 20 Dec 22:00Z 4.75 deg (outbound) ===================================================================== OCRs Executed: None. ===================================================================== Ongoing Activities: TAPS: Release 4.1.11 was delivered on 11/19/03 and is currently being tested by the FOT. The SUG is currently being reviewed by the FOT and SGT. ---------------------------------------------------------------------------- Automation (ROBOTT): - ROBOTT version 0.2 (Offline) is operational on String 1. - ROBOTT Version 0.3 was installed on String 2 (11/05/03) following the FOT verification of fixed Offline and HSM DRs on String 3. The FOT is currently testing the release on String 2. - Command & Control is still being tested by the Automation team and the FOT. - The first draft of the SUG is expected soon. ===================================================================== Anomalies: DOY 03326 (11/22/2003) ACE Anomaly S03-0027 - SEPICA SSD 2 Temp Yellow High Violation Mnemonic SSSSSD2T has violated its Yellow High each day during the reporting period. Mark Popecki notified. IMPACT: Unknown. FOT will continue to monitor and await direction. DOY 03328 (11/24/2003) ACE Anomaly G03-0118 (Appended) - GDS 34m (DSS-27) No Telemetry Online Telemetry was not online from DSS-27 until 1604z (AOS at 1545z). At the beginning of the pass, DSS-27 had data type 78 online but the MOC didn't see any coming into the system. After troubleshooting both JPL and NASA networks DSS-27 switched to data type 78 and the MOC finally received telemetry. After further investigation JPL found that the SFG was not setup for data type 78. That problem has been corrected. IMPACT: All telemetry recovered. DR# N101618 and G103746 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~