ACE Weekly 02/18/05 - 02/24/05 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: Maneuvers completed Type Attitude Date 02/18/05 DOY 049 2005 Thrusters 2R 4R+ 4R- Duration 9:50 minutes Start Time 16:41:27z Stop Time 16:51:17z Firing 50 pulses The next attitude maneuver is scheduled for Friday 02/25/05. ============================================================================ OCRs: None ============================================================================ Ongoing Activities: The Sun-Earth-Vehicle (SEV) angle reached 1.435 deg on 02/21/05. No downlink problems were encountered. Space Link Extension (SLE) - ACE SLE Requirements are currently under review. ============================================================================ Extra Activities: None ============================================================================ Anomalies: DOY 049 (02/18/05) ACE Anomaly G05-0023 PATH variable not correctly defined FOT file maintenance script failed to complete due to Unix path not being explicitly given. Script has been updated. IMPACT: None. Script was successfully run from a terminal window. DOY 054 (02/23/05) ACE Anomaly G05-0024 Loss of 0158 Monitor Data DSN 0158 Monitor Data not delivered for the first 40 minutes of the support. DR# N102676 IMPACT: Minimal. DOY 055 (02/24/05) ACE Anomaly G05-0025 GDS 26m (DSS-16) Antenna Stop X-Axis stopped tracking unexpectedly. DR# G105347 IMPACT: Minimal. 21 minute data outage was after playback was complete.