ACE Weekly 03/27/2012 - 04/02/2012 All ACE spacecraft subsystems are performing as expected. ======================================================================== Orbit/Attitude: Type Attitude Date 03/28/2012 DOY 088 2012 Thrusters 2R 4R+ 4R- Duration 15:35 min Start 15:14:54z Stop 15:30:29z HGAStart -7.37deg HGAStop +8.06deg SunStart 17.61deg SunStop 5.31deg SpinStart 5.0370rpm SpinStop 5.0415rpm Nutation 0.19deg Firing 79 pulses FuelUsed 0.2415lbs FuelRemain 122.9316lbs FinalSCMass 1357.192lbs The next attitude maneuver is scheduled for Wednesday 04/11/2012. ======================================================================= OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 085-092 2012 WS1 continues to work on their ranging configuration/equipment for ACE. WS1 is also working on automatically detecting the data rate (low-rate/high-rate) the spacecraft is transmitting. WS1 will schedule more ACE tests when changes have been incorporated into their system. ======================================================================== Anomalies: DOY 089 03/29/2012 S-ACE-0639 S12-0001 SWEPAM-E Overcount Alarm The SWEPAM-Electron Overcount Alarm flagged on Thursday 03/29/2012 and intermittently through the rest of the week. The Overcount threshold had been lowered on 10/07/2005 for the solar minimum (6.5 years ago). The instrument team will look at the data to determine the next course of action. IMPACT: The instrument automatically reduces voltages when the overcount alarm occurs.