All,

The perigee contacts were nominal for CMD & TLM. The sun maneuver was successful.

Tasks Accomplished:

1. Post Sun Maneuver :SetStaticZRate (estimator, 0.418)

StaticZRate @17:03:19z = 4.1653 RPM

StaticZRate @17:04:43z = 4.17699 RPM

2. Reset FDC Totals: ResetTaskRawFailed (AC_FDC)

Results for the Sun Maneuver:

CSS Angle TLM  1.23638

CSS Sun-Pointing Angle 2.47276

29 Jan 21 @ 19:00:00

CSS Angle TLM  0.727124             

CSS Sun-Pointing Angle 1.454248             

03 Feb 21 @ 17:00:00

Pre-Burn                            

Thruster 1           1328       29 Jan 21 @ 19:00:00

Thruster 2           1280      

Thruster 3           1568      

Thruster 4           1616      

Post-Burn                           

Thruster 1           1536       03 Feb 21 @ 17:00:00

Thruster 2           1488      

Thruster 3           2000      

Thruster 4           2048      

Number of Pulses                           

Thruster 1           208        

Thruster 2           208        

Thruster 3           432        

Thruster 4           432        

Thruster Pairs                   

Thruster 1 & 2    416        

Thruster 3 & 4    864        

Sheral Wesley  | Principal Engineer, Satellite Systems

Northrop Grumman Corporation  |  Space Systems

O: 703-406-5641  |  C: 202-236-0802  |  sheral.wesley@ngc.com