[Isocops] IBEX Goat Herder for 15, 16, and 20 July 2019

[Nigel Angold]

Thanks Eric.

Counter roll overs are a good thing - it means IBEX operations continue well into the second decade.

Nigel

> All,
>  
> The Apogee pass was nominal for CMD and TLM. Battery balancing and the Inertial maneuver were nominal.
> During the Apogee pass for July 20 it was noted that ACS Uptime count had rolled over and continued incrementing from zero. The thruster on-time counts had not reset. Part 1 of CAR #1004 ACE Reset Recovery was executed to re-enable FDC in the event that an actual ACE reset had occurred (S924 – OP31203). Step 2 of the CAR was not executed because the Static Z rate and Spin Rate were within family. The post-pass playback data was used to determine that the ACS Uptime had indeed only rolled over and that an ACE reset had not occurred. 
>  
> The following was completed:
> July 15
> Reset Master Timer
>  
> July 16
> CAR #1049 Orbit #455 ATS, Uplinked 91 commands
> Back-orbit Buffer Downlink
>  
> July 20
> Back-orbit Buffer Downlink
>  
> Results from the maneuver:
> Q1 -0.43644900 ActNor.EstInrToBdy[0]
> Q2 0.35910200 ActNor.EstInrToBdy[1]
> Q3 0.75758100 ActNor.EstInrToBdy[2]
> Q4 0.32654200 ActNor.EstInrToBdy[3]     
> GPS sec 1247662797 ActNor.EstTime        
> UTC time 07/20/2019 12:59:43 output
> MPS Diff 0.670 deg
> MPS Cmd Vector X -0.426215000
> MPS Cmd Vector Y 0.833974000
> MPS Cmd Vector Z 0.350469000
>  
> CSS Angle TLM   0.694925             
> CSS Sun-Pointing Angle   1.38985 
> 16 July 19 @ 04:30
> CSS Angle TLM   0.530449             
> CSS Sun-Pointing Angle   1.060898             
> 20 July 19 @ 13:00
>  
> Pre-Burn                          
> Thruster 1 14816 16 July 19 @ 04:30
> Thruster 2 14432              
> Thruster 3 17600              
> Thruster 4 17984              
> Post-Burn                         
> Thruster 1 14944 20 July 19 @ 13:00
> Thruster 2 14560              
> Thruster 3 17776              
> Thruster 4 18160              
> Number of Pulses                          
> Thruster 1 128    
> Thruster 2 128    
> Thruster 3 176    
> Thruster 4 176    
> Thruster Pairs                  
> Thruster 1 & 2    256        
> Thruster 3 & 4    352        
>  
>  
>  
> Eric Chubin
> Mission Operations Engineer - OCO2, IBEX
> Northrop Grumman Innovation Systems
> OCO2 MOC#: (703) 429 - 7015
> Mobile#: (240) 328 - 2098
> Eric.Chubin at ngc.com <mailto:Eric.Chubin at ngc.com>
>  
> 
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> *********************

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