ACE Weekly 10/15/2015 - 10/20/2015

All ACE spacecraft subsystems are performing as expected.

========================================================================
Attitude/Orbit:

Type               Attitude
Date             10/20/2015
DOY                293 2015
Thrusters        2R 4R+ 4R-
Duration       6:56 minutes
Start             13:25:20z
Stop              13:32:16z
ra,decStart    214.41,-17.50
ra,decStop     219.93,-21.16
ra,decExpect   220.09,-21.38
Deviation          0.27 deg (-3.7%)
HGAStart           2.57 deg
HGAStop            8.82 deg
SunStart          11.99 deg
SunStop           18.32 deg
SpinStart        5.0269 rpm
SpinStop         5.0290 rpm
Nutation           0.07 deg
Firing            35 pulses
FuelUsed         0.1125 lbm
FuelRemain      94.8568 lbm
FinalSCMass    1329.117 lbm

Note:

Following the observed nutation of SK-77 (0.81), the FOT is evaluating
the initial conditions just prior to SK-77 (e.g., nutation and catalytic
bed heater temperatures) and will compare with the previous 1A/2A SK
maneuver performance. The results will be shared on this forum.

Next attitude maneuver: Wednesday, 10/28/2015

========================================================================
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, concluded
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.


========================================================================
Activities:

Data Capture: 100%  DOY 284-291 2015

========================================================================
Anomalies:

None