ACE Weekly 09/09/2015 - 09/15/2015 All ACE spacecraft subsystems are performing as expected. ======================================================================== Attitude/Orbit: Type Attitude Date 09/15/2015 DOY 258 2015 Thrusters 2R 4R+ 4R- Duration 10:00 minutes Start 18:20:26z Stop 18:30:26z ra,decStart 162.26, -9.19 ra,decStop 171.07,-12.83 ra,decExpect 171.24,-13.07 Deviation 0.29 deg (-2.5%) HGAStart -10.22 deg HGAStop 10.74 deg SunStart 16.28 deg SunStop 16.00 deg SpinStart 5.0265 rpm SpinStop 5.0295 rpm Nutation 0.14 deg Firing 51 pulses FuelUsed 0.1581 lbm FuelRemain 95.8416 lbm FinalSCMass 1330.102 lbm Maneuver Scheduling: Next attitude maneuver: Tuesday, 9/22/2015 Next station keeping maneuver: Tuesday, 10/6/2015 ======================================================================== OCRs: Update on ACE-355: Relaxing the ACE antenna constraint from 9 to 11 degrees for the 2015 Summer Campaign. The 2015 Summer Campaign, which started on 5/19/2015, will conclude with the 10/20/2015 attitude maneuver. The return to the 9 degree upper limit antenna constraint will allow ACE to resume operations with WS1. Antenna view periods from several missions are beginning to overlap and winter months yield reduced view periods for Northern Hemisphere antennas (Goldstone & Madrid). WS1 supports will be used to supplement DSN usage and to prevent ACE SSR playback from falling excessively behind. ======================================================================== Activities: Data Capture: 100% DOY 249-256 2015 ======================================================================== Anomalies: None