[Isocops] IBEX Goat Herder for April 3-4, 2022

Mon Apr 4 15:49:30 EDT 2022

ll,
The perigee contacts for Orbit # 562 were nominal for command/telemetry and the inertial maneuver successful.
The following objectives were accomplished:

  1.  Reset_master_timer
  2.  CAR# 1235 Dump Orbit# 561 remaining Blks
  3.  CAR# 1237 Upload Orbit# 564 ATS
IBEX_2022_102_o0564a_v001.scr (93 cmds)

  1.  Dump Back Orbit (from start,0,0,0,0)
  2.  SetDownlink 320k
  3.  Results from PERIGEE inertial maneuver
Q1          0.30877400          ActNor.EstInrToBdy[0]
Q2          0.60535800          ActNor.EstInrToBdy[1]
Q3          0.44020200          ActNor.EstInrToBdy[2]
Q4          0.58687500          ActNor.EstInrToBdy[3]
GPS sec                1333011723         ActNor.EstTime
UTC time             04/03/2022 09:01:49        output

J2000     Spin Axis
ECI X      0.982385
ECI Y      0.170536
ECI Z      0.076400

Precession Maneuver
Cmd Diff              132.566 deg
MPS Diff              0.658     deg
*MPS Diff should be < 1.5*

Right Ascension - RA       9.848     deg
Declination - DEC              4.382     deg

IBEX Spin Axis vs. Sun Vector
IBEX Sun Angle  -2.828    deg

MPS Generated Inertial Vectors
MPS Cmd Vector X          0.982755000
MPS Cmd Vector Y          0.173039000
MPS Cmd Vector Z          0.065194000

CSS Angle TLM  0.310274
CSS Sun-Pointing Angle 0.620548
                                29 Mar 22 @14:00:00
CSS Angle TLM  0.142653
CSS Sun-Pointing Angle 0.285306
                                03 Apr 22 @ 08:00:00
Pre-Burn
Thruster 1           18960    29 Mar 22 @14:00:00
Thruster 2           18400
Thruster 3           24064
Thruster 4           24624
Post-Burn
Thruster 1           19216    03 Apr 22 @ 08:00:00
Thruster 2           18656
Thruster 3           24416
Thruster 4           24976
Number of Pulses
Thruster 1           256
Thruster 2           256
Thruster 3           352
Thruster 4           352
Thruster Pairs
Thruster 1 & 2    512
Thruster 3 & 4    704

Sheral Wesley  |  Sr Principal Engineer, Satellite Systems

Northrop Grumman Corporation  |  Space Systems

O: 703-406-5641  |  C: 202-236-0802  |  sheral.wesley at ngc.com<mailto:sheral.wesley at ngc.com>

 [cid:efe4ace7-1396-4a39-8632-ba7b88bf4e10]

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