ACE Weekly 09/09/2015 - 09/15/2015

All ACE spacecraft subsystems are performing as expected.

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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

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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.

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Activities:

Data Capture:  100%  DOY 249-256 2015

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Anomalies:

None