ACE Weekly 05/04/2016 - 05/17/2016 All ACE spacecraft subsystems are performing as expected. ======================================================================== Attitude/Orbit: Type Attitude Attitude Date 05/11/2016 05/18/2016 DOY 132 2016 138 2016 Thrusters 2R 4R+ 4R- 2R 4R+ 4R- Duration 4:54 minutes 4:41 minutes Start 16:14:39z 16:04:32z Stop 16:19:33z 16:09:13z ra,decStart 53.16,+27.46 55.32,+31.24 ra,decStop 55.50,+31.18 59.34,+33.47 ra,decExpect 55.74,+31.35 59.60,+33.54 Deviation 0.25 deg (-5.6%) 0.22 deg (-5.2%) HGAStart -5.18 deg -7.75 deg HGAStop +8.49 deg +8.96 deg SunStart 10.38 deg 11.86 deg SunStop 14.56 deg 14.68 deg SpinStart 5.0755 rpm 5.0769 rpm SpinStop 5.0770 rpm 5.0782 rpm Nutation 0.09 deg 0.17 deg Firing 25 pulses 24 pulses FuelUsed 0.0798 lbm 0.0769 lbm FuelRemain 90.756 lbm 90.680 lbm FinalSCMass 1325.016 lbm 1325.940 lbm Upcoming Maneuver Schedule: - Attitude Maneuver: Tuesday, 05/24/2016 - Station Keeping (SK-80): Tuesday, 05/31/2016 ======================================================================== OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 124 - 137 2016 ======================================================================== Anomalies: DOY 126 05/05/2016 SOAR S-ACE-93-CTT-2 Goldstone Complex (recurring) Ops Chief notified FOT during the D24 support that the station had experienced a power glitch and would be 1-way until it reassessed and reconfigured (DSN DR# G117093). IMPACT: Minimal. No command activities scheduled during outage; all data recovered during support. DOY 127 05/06/2016 SOAR S-ACE-96 MOC automation unable to download DSN schedule MOC automation software was not able to successfully download a DSN schedule beginning at 2137z on 05/06/2016 (DOY 127). IMPACT: Minimal. FOT stopped the automatic download of the schedule due to Wind schedule change for current week. FOT manually updated the MOC's cron schedule to reflect the current ACE (& Wind) support times. DSN resolved issue with SPS Portal; FOT verified and re-enabled the automated schedule download on 5/11/2016. DOY 131 05/10/2016 SOAR S-ACE-93-CTT-3 Goldstone Complex (recurring) DSN's D24 transmitter declared Red prior to BOT; unable to support the ACE pass (DR# G117151). IMPACT: 210 minutes of antenna time lost. SSR data capture caught up by 5/13/2016. Weekly Attitude Maneuver delayed one day. DOY 133 05/12/2016 SOAR S-ACE-95 WS1 Telemetry Dropout Data went static shortly after SSR playback initiated. WS1 personnel reported poor signal strength and began troubleshooting its configuration. Data was back online to MOC ~50 minutes later after WS1 re-initialized and reconfigured its equipment for the support. IMPACT: Manual intervention required. SSR playback re-started to recover playback lost while WS1 investigated and reconfigured its system. Decision made to obtain DSN antenna time and terminate WS1 support early. FOT performed WS1 pass clean-up activities and prepared operational system for newly added DSN support. All remaining SSR data recovered during DSN support. =========================================== 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 -- Dr. Andrew J. 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