All,

    The Apogee contact was nominal for CMD & TLM. The inertial maneuver was successful. We did experience another star tracker reset. The errors were cleared and the star tracker is operating nominally. I was able to change the downlink to 40k and re-dump the missing 30 SSR blocks from Orbit 495. And I was able to delete the dump new SSR command from the spacecraft timed commands. I will delete the rest of the commands during the Saturday night pass.

Tasks Accomplished:

CAR 344 – Reset FDC totals and Response latch values – Star Tracker reset

CAR 1107 – Dump Orbit 495 SSR Missing blocks

CAR 1106 – ATS Upload – IBEX_2020_232_o0498a_BUS_V001 43 cnds

Delete CMD 209 – SSR Dump New for 2020/08:09:14:10:00

Inertial Maneuver Results:

Q1 0.01563310 ActNor.EstInrToBdy[0]

Q2 -0.59049600 ActNor.EstInrToBdy[1]

Q3 -0.60784400 ActNor.EstInrToBdy[2]

Q4 0.53065600 ActNor.EstInrToBdy[3]

GPS sec 1280664349 ActNor.EstTime

UTC time 08/05/2020 12:05:35 output

MPS Diff 0.504 deg

MPS Cmd Vector X -0.647738000

MPS Cmd Vector Y 0.702931000

MPS Cmd Vector Z 0.293807000

CSS Angle TLM 0.44279

CSS Sun-Pointing Angle 0.88558

  31 July 20 @ 11:00

CSS Angle TLM 0.77718

CSS Sun-Pointing Angle 1.55436

  31 July 20 @ 11:00

Pre-Burn

Thruster 1 1440 31 July 20 @ 11:00

Thruster 2 1408

Thruster 3 1664

Thruster 4 1696

Post-Burn   `

Thruster 1 1712 31 July 20 @ 11:00

Thruster 2 1680

Thruster 3 2000

Thruster 4 2032

Number of Pulses

Thruster 1 272

Thruster 2 272

Thruster 3 336

Thruster 4 336

Thruster Pairs 

Thruster 1 & 2 544

Thruster 3 & 4 672

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430