[Isocops] IBEX Goat Herder 07 July 2024

[Coca Gonzales, Andrea [US] (SP)]

Good afternoon team,

            During the first perigee contact, we tried to set the spacecraft time and noticed that the GPS time switched to 605035, which set us to January 13, 1980. Shortly after that, we had a star tracker reset. We tried running the set spacecraft time script again and it set us back to the same GPS time value. We switched over to IBEX-3 and ran the script again and the GPS time changed to the right value. The quaternions also updated, and we were able to verify the maneuver. During the second perigee contact, everything seemed nominal, and we were able to clear the start tracker reset errors and dump SSR (VCid2).

Tasks Accomplished:

CAR #1400 Orbit 655 ATS upload
   IBEX_2024_198_o0655a_v001 - 101 commands
Set Spacecraft Time
Dump ssr data (vc2)
Reset Master Timer
Standing CAR #344 - Reset FDC Totals and Response Latch Values

Results from the inertial maneuver:

Q1 -0.18671900
Q2 0.51981500
Q3 0.82987200
Q4 0.07899850

GPS sec 1404395681
UTC time 07/07/2024 13:54:27
MPS Diff 0.727

MPS Cmd Vector X -0.23235200
MPS Cmd Vector Y 0.89592100
MPS Cmd Vector Z 0.37860000

CSS Angle TLM 0.14671
CSS Sun-Pointing Angle 0.29342
  03 Jul 24 @04:00:00
CSS Angle TLM 0.279765
CSS Sun-Pointing Angle 0.55953
  07 Jul 24 @13:00:00
Pre-Burn
Thruster 1 1392 03 Jul 24 @04:00:00
Thruster 2 1360
Thruster 3 1392
Thruster 4 1424
Post-Burn
Thruster 1 1664 07 Jul 24 @13:00:00
Thruster 2 1632
Thruster 3 1696
Thruster 4 1728
Number of Pulses
Thruster 1 272
Thruster 2 272
Thruster 3 304
Thruster 4 304
Thruster Pairs
Thruster 1 & 2 544
Thruster 3 & 4 608

Best,
Andrea Coca Gonzales | Associate Engineer Satellite Systems | MEV | ICESat-2 | TESS | IBEX
Northrop Grumman Corporation  |  Space Systems
Andrea.CocaGonzales at ngc.com<mailto:Andrea.CocaGonzales at ngc.com>

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