ACE Weekly 03/09/2016 - 03/16/2016 All ACE spacecraft subsystems are performing as expected. ======================================================================== Attitude/Orbit: Type Attitude SK-79 Date 03/16/2016 03/16/2016 DOY 076 2016 076 2016 Thrusters 2R 4R+ 4R- 1A 2A Duration 10:43 minutes 32 seconds Start 16:52:14z 18:07:04z Stop 17:02:57z 18:07:36z ra,decStart 359.19,-14.06 8.38,-10.12 ra,decStop 8.38,-10.12 8.49,-10.33 ra,decExpect 8.55,-10.31 8.38,-10.12 Deviation 0.08 deg (-0.8%) (+0.847%) HGAStart -8.63 deg -7.77 deg HGAStop +7.77 deg +7.96 deg SunStart 12.87 deg 14.60 deg SunStop 14.60 deg 14.81 deg SpinStart 5.0615 rpm 5.0642 rpm SpinStop 5.0642 rpm 5.0546 rpm Nutation 0.15 deg 0.10 deg Firing 55 pulses Continuous FuelUsed 0.1621 lbm 0.1038 lbm FuelRemain 92.044 lbm 91.940 lbm FinalSCMass 1326.304 lbm 1326.200 lbm Upcoming Maneuver Schedule: - Attitude Maneuver: Tuesday, 03/22/2016 ======================================================================== OCRs: None ======================================================================== Activities: Data Capture: 100% 2016 DOY 066 - 2016 DOY 073 ======================================================================== Anomalies: - 03/15/2016 - SOAR S-ACE-93-CTT-1 - DSN Problem - Goldstone Complex (Recurring) - The Ops Chief notified over the voice loop at the beginning of the pass that the D-15 station was declared red (DSN DR# G117003). Telemetry was successfully acquired at 17:54:48z (1.65 hours into the pass). Per DSN DR# G117003, the problem was attributed to two loose ethernet cables between the core switch and A/B switch which supports the primary NRT and backup NRT circuits. These cables were later reseated and service was restored. Impact: Moderate - 1) Due to uncertainty regarding the station performance for the remainder of the contact, the FOT conservatively re-scheduled the planned attitude and SK-79 maneuvers for the next day (Wednesday, 03/16/2016), using the D-24 station. To this effect, the FOT reloaded the TT-Bins for the radial and axial catbed heaters during the D-15 contact, to support the maneuvers on 03/16/2016. 2) Working closely with the SSMO Scheduling Team, the FOT also extended the D-24 03/16/2016 pass by 30 minutes, and extended/converted a range-only D-34 contact on 03/17/2016 to a tracking pass, to improve data recovery. 3) Delay of 1.65 hours for starting the SSR playback activities on 03/15/2016, resulted in 37.5 minutes of carried-over data at the end of the contact. The SSR data was successfully captured during the D-24 contact on 03/16/2016.