ACE Weekly 06/11/2014 - 06/17/2014 All ACE spacecraft subsystems are performing as expected. ======================================================================== Orbit/Attitude: Type Attitude Date 06/17/2014 DOY 168 2014 Thrusters 2R 4R+ 4R- Duration 3:33 min Start 19:56:05z Stop 19:59:38z ra,decStart 91.53,39.21 ra,decStop 95.60,39.71 ra,decExpect 95.96,39.70 Deviation 0.28 deg HGAStart -9.99 deg HGAStop +10.94 deg SunStart 16.59 deg SunStop 18.32 deg SpinStart 4.9971 rpm SpinStop 4.9978 rpm Nutation 0.15 deg Firing 18 pulses FuelUsed 0.0626 lbm FuelRemain 106.2232 lbm FinalSCMass 1341.483 lbm The next attitude maneuver is scheduled for 06/24/2014. Station Keeping maneuver #70 is scheduled for 7/1/2014. ======================================================================== OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 159-166 2014 ======================================================================== Anomalies: DOY 168 06/17/2014 S-ACE-0677 G14-0005 DSS-24 Earth Receive Time DSS-24 Earth Receive Time was behind by 0.091 seconds after the spacecraft switched to the high data rate (1 frame every 0.091 seconds). This is an intermittent problem (AR 118839) with the Receiver, Ranging, and Telemetry (RRT) software v11.3.6 at Goldstone. DSN has a workaround for this problem which is to halt and re-acquire the TLP after the data rate change. This may not have been performed for this pass. An email has been sent to the DSN NOPEs (Network Operations Project Engineers) informing them of the recurrence. DR# N109634. This last occurred 5/28/2014. IMPACT: Clock report for DOY 148 manually regenerated with bad data excluded and sent to the ACE Science Center. Note, the deviation between the old and new clock reports is minimal. The updated report rounded down the seconds at midnight and the previous report had rounded up the seconds at midnight. There is no problem continuing to use the previous clock report to avoid regenerating products.