ACE Weekly 07/31/2013 - 08/06/2013 All ACE spacecraft subsystems are performing as expected. ======================================================================== Orbit/Attitude: Type Attitude Date 08/06/2013 DOY 218 2013 Thrusters 2R 4R+ 4R- Duration 5:22 min Start 16:45:09z Stop 16:50:31z HGAStart -8.82 deg HGAStop +8.95 deg SunStart 10.96 deg SunStop 8.03 deg SpinStart 4.9466 rpm SpinStop 4.9476 rpm Nutation 0.07 deg Firing 27 pulses FuelUsed 0.0915 lbm FuelRemain 112.8528 lbm FinalSCMass 1347.113 lbm The next attitude maneuver is scheduled for Tuesday 08/13/2013. ======================================================================== OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 209-216 2013 DSN has rescheduled the decommissioning DSS-27 to 12/23/2013 (originally planned for 12/08/2013). This will leave DSN with 12 remaining antennas. ACE has been using DSS-27 for ~70% of our DSN support (~26 out of ~36 hours per week). The following table shows average DSS-27 usage per mission for 2013. Before LADEE After LADEE launch Weeks 1-35 Weeks 36-44 SOHO 32 hours/week 24 hours/week (averages) Chandra 29 hours/week 24 hours/week ACE 26 hours/week 18 hours/week Cluster 7 hours/week 6 hours/week LADEE 38 hours/week ======================================================================== Anomalies: None