ACE Weekly 10/30/2013 - 11/05/2013

All ACE spacecraft subsystems are performing as expected.

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Orbit/Attitude:

	Type         Attitude
	Date         11/05/2013
	DOY          309 2013
	Thrusters    2R 4R+ 4R-
	Duration     17:24 min
	Start        20:44:53z
	Stop         21:02:29z
	HGAStart     -7.23 deg
	HGAStop      +8.54 deg
	SunStart      7.97 deg
	SunStop      12.46 deg
	SpinStart    4.9643 rpm
	SpinStop     4.9691 rpm
	Nutation      0.14 deg
	Firing       88 pulses
	FuelUsed       0.2658 lbm
	FuelRemain   110.6824 lbm
	FinalSCMass  1344.943 lbm

The next attitude maneuver is scheduled for Tuesday 11/12/2013.

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OCRs:

None

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Activities:

Data Capture:  99.993%  DOY 300-307 2013
DOY 303 18:57:04-18:57:43  40 seconds - gap while catching up on data

A DSS-15 Bind Test was performed Monday 11/04/2013 (DOY 308).  DSS-15
is acquiring an S-Band uplink which will allow ACE to use this DSN
antenna.  DSS-15 will be available starting 12/21/2013.  This Bind
Test was confirm that the MMOC can connect to the new station via the
Space Link Extension protocol (SLE).


Background Information DSS-15 & DSS-27
DSN is adding an S-Band uplink capability to DSS-15 (12/21/2013) and
decommissioning DSS-27 (12/23/2013).  ACE will continue to have 6 DSN
antennas for use (15,24, 34,45, 54,65), but the total number of DSN
antennas will be reduced from 13 to 12.  DSN has said that missions
have reduced their requested hours.  Periods of reduced antenna
availability will be reported as they approach.


There is a higher than normal risk of data loss during the week of
1/1/2014 and 1/31/2014 due to reduced antenna time.
* With the new moon on 1/1/2014 and on 1/31/2014, LADEE has the same
  antenna view as the L1 missions.  LADEE is the third biggest user of
  DSN in January (Mars, DSN, LADEE, Maven, Stereo, SOHO,...)
* The new moon also means that WS1 is unavailable since it will be
  tracking LRO when it would have view of ACE.
* DSN will stop using DSS-27 on 12/23/2013.  DSS-27 was only used by a
  few missions (ACE, SOHO, Chandra, Cluster, LADEE, MOM) and was
  usually more available.
* Every winter, the ACE view is shorter for the northern hemisphere
  antennas.  75% of the DSN antennas are in the northern hemisphere,
  so southern hemisphere antennas have limited availability.


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Anomalies:

None