ACE Weekly 04/15/2015 - 04/21/2015

ACE spacecraft subsystems are performing as expected.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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Orbit/Attitude:

Type           Attitude
Date           04/21/2015
DOY            111 2015
Thrusters      2R 4R+ 4R-
Duration       10:49 minutes
Start          15:50:32z
Stop           16:01:21z
ra,decStart    38.56,11.74
ra,decStop     37.74,21.83
ra,decExpect   37.97,22.04
Deviation       0.30 deg (-1.9%)
HGAStart       -1.49 deg
HGAStop        +8.78 deg
SunStart        9.58 deg
SunStop        13.14 deg
SpinStart       5.0151 rpm
SpinStop        5.0181 rpm
Nutation        0.14 deg
Firing         55 pulses
FuelUsed        0.1696 lbm
FuelRemain     98.8808 lbm
FinalSCMass   1333.141 lbm

ACE will cross the ecliptic plane on 4/29/2015.  This maneuver and the
previous maneuver are longer than usual as the spacecraft attitude
changes from pointing below the ecliptic plane to pointing above the
ecliptic plane.

The next maneuver is scheduled for Tuesday 4/28/2015.

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
OCRs:

None
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Activities:

Data Capture:  100%  DOY 102-109 2015


=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Anomalies:

DOY 106  04/16/2015  S-ACE-0699  G15-0008  DSS-24 Power & SSR Stuck
DSS-24 lost power while transitioning to commercial power 67 minutes
before End Of Track (DR# G116165).  Downlink was restored with 7 minutes
before End Of Track, but insufficient time for final commanding.  The
onboard recorder was still in playback when the spacecraft transitioned
to low-rate.

IMPACT:  NOAA SWPC did not receive data for 60 minutes because their
other antennas are unable to track ACE at the high data-rate.  The
onboard recorder was automatically restored by the ground procedures but
manual intervention was necessary to calculate redumps.

DOY 112  04/22/2015  S-ACE-0700  G15-0009  DSS-54 Configuration Issue
DSS-54 configured their equipment to receive the high data-rate before
the commanding was completed.  The MMOC ground system repeated the first
command in the sequence since no telemetry was available to indicate
that the command had reached the spacecraft.  (DR# M108725).

IMPACT:  Activities delayed 19 minutes until DSS-54 reconfigured to
receive the low data-rate.  Once low-rate telemetry was received by the
MMOC ground system, the remaining commands were sent.  The spacecraft
transitioned to the high data-rate and DSS-54 configured correctly to
receive the high data-rate.


--_000_D15FC0FA161860HumbertoMCalvaninasagov_
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ly: Calibri, sans-serif; ">
<div><span style=3D"font-family: Consolas; font-size: medium; ">ACE Weekly =
04/15/2015 - 04/21/2015</span></div>
<div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">ACE spacecraft su=
bsystems are performing as expected.</div>
<div style=3D"font-family: Consolas; font-size: medium; "></div>
<div style=3D"font-family: Consolas; font-size: medium; ">=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</div>
<div style=3D"font-family: Consolas; font-size: medium; ">Orbit/Attitude:</=
div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>Type&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Attitude</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>Date &nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; 04/21/2015</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>DOY&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;111 2015</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>Thrusters&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;2R 4R&#43; 4R-</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>Duration &nbsp; &nbsp; &n=
bsp; 10:49 minutes</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>Start&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15:50:32z</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>Stop&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 16:01:21z</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>ra,decStart&nbsp;&nbsp;&n=
bsp;&nbsp;38.56,11.74</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>ra,decStop&nbsp;&nbsp;&nb=
sp;&nbsp; 37.74,21.83</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>ra,decExpect&nbsp;&nbsp; =
37.97,22.04</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>Deviation&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; 0.30 deg (-1.9%)</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>HGAStart&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp; -1.49 deg</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>HGAStop&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#43;8.78 deg</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>SunStart&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.58 deg</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>SunStop&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.14 deg</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>SpinStart &nbsp; &nbsp; &=
nbsp; 5.0151 rpm</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>SpinStop &nbsp; &nbsp; &n=
bsp; &nbsp;5.0181 rpm</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>Nutation&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.14 deg</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>Firing&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 55 pulses</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>FuelUsed&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.1696 lbm</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>FuelRemain&nbsp;&nbsp;&nb=
sp;&nbsp; 98.8808 lbm</div>
<div style=3D"font-family: Consolas; font-size: medium; "><span class=3D"Ap=
ple-tab-span" style=3D"white-space: pre; "></span>FinalSCMass&nbsp;&nbsp; 1=
333.141 lbm</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">ACE will cross th=
e ecliptic plane on 4/29/2015.&nbsp;&nbsp;This maneuver and the</div>
<div style=3D"font-family: Consolas; font-size: medium; ">previous maneuver=
 are longer than usual as the spacecraft attitude</div>
<div style=3D"font-family: Consolas; font-size: medium; ">changes from poin=
ting below the ecliptic plane to pointing above the</div>
<div style=3D"font-family: Consolas; font-size: medium; ">ecliptic plane.</=
div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">The next maneuver=
 is scheduled for Tuesday 4/28/2015.</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</div>
<div style=3D"font-family: Consolas; font-size: medium; ">OCRs:</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">None</div>
<div style=3D"font-family: Consolas; font-size: medium; "></div>
<div style=3D"font-family: Consolas; font-size: medium; ">=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</div>
<div style=3D"font-family: Consolas; font-size: medium; ">Activities:</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">Data Capture:&nbs=
p;&nbsp;100%&nbsp;&nbsp;DOY 102-109 2015</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</div>
<div style=3D"font-family: Consolas; font-size: medium; ">Anomalies:</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">DOY 106&nbsp;&nbs=
p;04/16/2015&nbsp;&nbsp;S-ACE-0699&nbsp;&nbsp;G15-0008&nbsp;&nbsp;DSS-24 Po=
wer &amp; SSR Stuck</div>
<div style=3D"font-family: Consolas; font-size: medium; ">DSS-24 lost power=
 while transitioning to commercial power 67 minutes</div>
<div style=3D"font-family: Consolas; font-size: medium; ">before End Of Tra=
ck (DR# G116165).&nbsp;&nbsp;Downlink was restored with 7 minutes</div>
<div style=3D"font-family: Consolas; font-size: medium; ">before End Of Tra=
ck, but insufficient time for final commanding.&nbsp;&nbsp;The</div>
<div style=3D"font-family: Consolas; font-size: medium; ">onboard recorder =
was still in playback when the spacecraft transitioned</div>
<div style=3D"font-family: Consolas; font-size: medium; ">to low-rate.</div=
>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">IMPACT:&nbsp;&nbs=
p;NOAA SWPC did not receive data for 60 minutes because their</div>
<div style=3D"font-family: Consolas; font-size: medium; ">other antennas ar=
e unable to track ACE at the high data-rate.&nbsp;&nbsp;The</div>
<div style=3D"font-family: Consolas; font-size: medium; ">onboard recorder =
was automatically restored by the ground procedures but</div>
<div style=3D"font-family: Consolas; font-size: medium; ">manual interventi=
on was necessary to calculate redumps.</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">DOY 112&nbsp;&nbs=
p;04/22/2015&nbsp;&nbsp;S-ACE-0700&nbsp;&nbsp;G15-0009&nbsp;&nbsp;DSS-54 Co=
nfiguration Issue</div>
<div style=3D"font-family: Consolas; font-size: medium; ">DSS-54 configured=
 their equipment to receive the high data-rate before</div>
<div style=3D"font-family: Consolas; font-size: medium; ">the commanding wa=
s completed.&nbsp;&nbsp;The MMOC ground system repeated the first</div>
<div style=3D"font-family: Consolas; font-size: medium; ">command in the se=
quence since no telemetry was available to indicate</div>
<div style=3D"font-family: Consolas; font-size: medium; ">that the command =
had reached the spacecraft.&nbsp;&nbsp;(DR# M108725).</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
<div style=3D"font-family: Consolas; font-size: medium; ">IMPACT:&nbsp;&nbs=
p;Activities delayed 19 minutes until DSS-54 reconfigured to</div>
<div style=3D"font-family: Consolas; font-size: medium; ">receive the low d=
ata-rate.&nbsp;&nbsp;Once low-rate telemetry was received by the</div>
<div style=3D"font-family: Consolas; font-size: medium; ">MMOC ground syste=
m, the remaining commands were sent.&nbsp;&nbsp;The spacecraft</div>
<div style=3D"font-family: Consolas; font-size: medium; ">transitioned to t=
he high data-rate and DSS-54 configured correctly to</div>
<div style=3D"font-family: Consolas; font-size: medium; ">receive the high =
data-rate.</div>
<div style=3D"font-family: Consolas; font-size: medium; "><br>
</div>
</div>
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--_000_D15FC0FA161860HumbertoMCalvaninasagov_--