ACE Weekly 08/10/2016 - 08/23/2016 All ACE spacecraft subsystems are performing as expected. ======================================================================== Attitude/Orbit: Type Attitude Type Attitude Date 08/16/2016 Date 08/23/2016 DOY 229 2016 DOY 236 2016 Thrusters 2R 4R+ 4R- Thrusters 2R 4R+ 4R- Duration 10:41 minutes Duration 10:54 minutes Start 14:30:19z Start 19:45:08z Stop 14:41:00z Stop 19:56:02z ra,decStart 131.09,+8.10 ra,decStart 139.27,+2.50 ra,decStop 139.11,+2.65 ra,decStop 148.10,-1.88 ra,decExpect 139.04,+2.48 ra,decExpect 148.09,-2.01 Deviation 0.04 deg (-0.4% Deviation 0.05 deg (-0.5%) HGAStart -9.22 deg HGAStart -10.17 deg HGAStop -9.62 deg HGAStop +10.12 deg SunStart 15.87 deg SunStart 16.15 deg SunStop 13.00 deg SunStop 13.91 deg SpinStart 5.0772 rpm SpinStart 5.0801 rpm SpinStop 5.0804 rpm SpinStop 5.0831 rpm Nutation 0.15 deg Nutation 0.12 deg Firing 55 pulses Firing 56 pulses FuelUsed 0.1595 lbm FuelUsed 0.1620 lbm FuelRemain 89.897 lbm FuelRemain 88.735 lbm FinalSCMass 1323.157 lbm FinalSCMass 1323.995 lbm Upcoming Maneuver Schedule: - Attitude Maneuver: 08/30/2016 - Spin Down Maneuver: 09/20/2016 ======================================================================== OCRs: Update: MOCR ACE-366 Relax HGA constraint from 9 to 11 degrees for 2016 Summer Campaign - The 2016 Extended HGA Summer Campaign, which started on 06/07/2016, will conclude with the 09/06/2016 attitude maneuver. - OSIRIS-Rex (ORX) is scheduled to launch 09/08/2016. Several ACE DSN supports will be impacted by the proposed launch contingencies. The return to the 9 degree upper limit antenna constraint will allow ACE to resume operations with WS1. ======================================================================== Activities: Data Capture: 99.9997% DOY 221-234 2016 ======================================================================== Anomalies: DOY 226 8/13/2016 SOAR S-ACE-93-CTT-5 Goldstone Complex (recurring) D15 unable to lock on two way telemetry at BOT. Station tried alternate DC, then rebooted REC. Telemetry acquired and automated operations resumed ~24 minutes after BOT. IMPACT: Minimal. Automated pass activities resumed without FOT intervention. =========================================== Jacqueline Maldonado Snell WIND, Geotail and ACE Flight Operations Team Manager Honeywell Technology Solutions Incorporated (HTSI) Goddard Space Flight Center Bldg. 14 Rm N284, Mailstop 428.2 Greenbelt, MD 20771 Office: 301-286-7072 Cell: 443-896-8868 Fax: 301-286-8257 Email: Jacqueline.M.Snell@nasa.gov