ACE Weekly 01/21/2015 - 01/27/2015

ACE spacecraft subsystems are performing as expected.

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Orbit/Attitude:

	Type           Attitude
	Date          01/27/2015
	DOY            027 2015
	Thrusters      2R 4R+ 4R-
	Duration        7:06 min
	Start          17:48:24z
	Stop           17:55:30z
	ra,decStart   298.23,-10.63
	ra,decStop    305.04,-10.96
	ra,decExpect  305.17,-11.07
	Deviation       0.17 deg (-2% short)
	HGAStart       -8.77 deg
	HGAStop        +8.99 deg
	SunStart       13.61 deg
	SunStop         8.75 deg
	SpinStart     4.9982 rpm
	SpinStop      4.9999 rpm
	Nutation        0.19 deg
	Firing         36 pulses
	FuelUsed        0.1160 lbm
	FuelRemain    101.3620 lbm
	FinalSCMass   1335.622 lbm

The next attitude maneuver is scheduled for Wednesday 02/04/2014.

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OCRs:

None

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Activities:

Data Capture:  100%  DOY 018-025 2015

Santiago (Near Earth Network) continues their ranging tests while ACE
was in the low downlink rate.  The data will be used in preparing for
the DSCOVR mission.  Another test is scheduled for Thursday 1/28/2015.

  01/21/2015  DOY 021  1700-1800z (not performed)
  01/23/2015  DOY 023  1500-1605z
  01/23/2015  DOY 023  1730-1840z
  01/26/2015  DOY 026  1505-1616z

The DSCOVR launch is scheduled for 2/8/2015 and DSN antenna time is
limited.  For example (and just for information), on the 2 days
following the launch (2/09 & 2/10) ACE has ~110 hours of view at DSN.
DSCOVR is using ~93 of those hours with other missions using the other
~17 hours.  The SSMO scheduling team is acquiring WS1 time whenever it
is available.  The risk of data loss is increased during this time.

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Anomalies:

None