ACE Weekly 07/23/2008 - 07/29/2008 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: Type Attitude Date 07/25/2008 DOY 207 2008 Thrusters 2R 4R+ 4R- Duration 13:53 min Start 17:33:04z Stop 17:46:57z HGAStart -6.13deg HGAStop +7.80deg SunStart 5.59deg SunStop 15.68deg Nutation 0.35deg Firing 71 pulses FuelUsed 0.2280lbs FuelRemain 148.5280lbs FinalSCMass 1382.788lbs The next attitude maneuver is scheduled for Thursday 08/07/2008. =========================================================================== OCRs: None ============================================================================ Activities: DOY 205 07/23/2008 - The Multi-Mission Ops Center (MMOC) successfully tested sending ACE NO_OP commands to DSN's Test Facility (DTF-21). There was no impact to ACE's operations pass with DSS-66. ============================================================================ Anomalies: DOY 207 07/25/2008 S-ACE-0341 G08-0078 DSS-66 Telemetry Loss DSS-66 experienced 1% data loss throughout the pass. All data was recovered through redumps. The redumps took 80 minutes to complete. Note that the initial data dump was 150 minutes. Additional time was available on the following day with DSS-27. IMPACT: All data was captured through redumps. On a per frame basis, the initial data loss was only 1%. However, in terms of complete major frames (128 second cycle), the initial data loss corresponds to 20% (5 hours).