ACE Weekly 01/06/2010 - 01/12/2010 All ACE spacecraft subsystems are performing nominally. ======================================================================== Orbit/Attitude: Type Attitude Date 01/12/2010 DOY 012 2010 Thrusters 2R 4R+ 4R- Duration 15:23 min Start 18:49:31z Stop 19:04:54z HGAStart -7.75deg HGAStop 7.78deg SunStart 6.27deg SunStop 17.63deg SpinStart 5.0484rpm SpinStop 5.0527rpm Nutation 0.12deg Firing 78 pulses FuelUsed 0.2449lbs FuelRemain 138.4556lbs FinalSCMass 1372.715lbs The next attitude maneuver is scheduled for Tuesday 01/26/2010. The next station-keeping maneuver is tentatively scheduled for Thursday 02/11/2010. ======================================================================= OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 003-010 2010 A Multi-Mission Operations Center (MMOC) test is tentatively scheduled for Tuesday 01/19/2010 (1500 1545 1710 1725z). A single MMOC workstation will simultaneously command both ACE and WIND spacecrafts. ======================================================================== Anomalies: DOY 012 01/12/2010 S-ACE-0476 G10-0001 Network Outage/Thruster Abort A JPL network upgrade scheduled from 1700-1800z was expected to result in a 5 minute outage. Problems with the network upgrade resulted in a 1 hour outage (1724-1829z DR#N105888). The parameters for today's attitude maneuver were loaded at 1658z but the maneuver was delayed until the expected 5 minute outage was completed. An onboard timer issued a thruster abort and cleared the attitude parameters at 1743z. When the network problems were resolved, the thruster abort flag was cleared and the maneuver was reloaded and completed (1905z). The EOT was extended 30 minutes (from 1925z to 1955z) for post-maneuver attitude calculations. Thanks to the SOHO mission which followed ACE on DSS-27 for delaying their Beginning Of Track. IMPACT: The pass was extended 30 minutes.