All,

   The apogee contact was nominal. The star tracker is back to 80% valid. I did a flight computer back orbit data dump, and it showed that the star tracker had already achieved 80% valid by the start time of recorded data (14 Oct @12:45:00). We will have to wait on the SSR dump to see when it did go back to normal operations @80% valid.

  The orbit 624 ATS was deleted and a version 2 ATS was uplinked replacing the inertial maneuver with a sun maneuver. The orbit 625 version 2 ATS was also uplinked during the contact.

Tasks Accomplished:

Deleted Timed Commands 

Flight Computer Back Orbit dump

CAR #1346 Orbit 624 ATS upload Version 2

   IBEX_2023_281_o0624a_v002 29 commands

CAR #1347 Orbit 625 ATS upload Version 2

   IBEX_2023_291_o0625a_v002 91 Commands

Results from the Sun Maneuver:

CSS Angle TLM 0.540317

CSS Sun-Pointing Angle 1.080634

  09 Oct 23@17:00:00

CSS Angle TLM 0.730614

CSS Sun-Pointing Angle 1.461228

  16 Oct 23@04:20:00

Pre-Burn

Thruster 1 12928 09 Oct 23@17:00:00

Thruster 2 12560

Thruster 3 16112

Thruster 4 16480

Post-Burn

Thruster 1 13136 16 Oct 23@00:30:00

Thruster 2 12768

Thruster 3 16592

Thruster 4 16960

Number of Pulses

Thruster 1 208

Thruster 2 208

Thruster 3 480

Thruster 4 480

Thruster Pairs 

Thruster 1 & 2 416

Thruster 3 & 4 960

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430