All,

   Tonight’s apogee pass was not nominal. The AGC was just around -122 to -121. We kept seeing data drop outs as the receiver would unlock. I was able to verify the inertial maneuver was successful and that we had another star tracker reset. I was able to reset the latch values for the tracker reset. Although it did take a couple tries to get the commands on board. The last sample of data that I saw was @00:45:00. Then @00:49:00 I asked SSC to bring down the carrier and terminate all tracking support.

Tasks Accomplished:

CAR 344 Reset FDC totals & response latch Values

Inertial maneuver results:

Q1 0.62321700 ActNor.EstInrToBdy[0]

Q2 -0.55489800 ActNor.EstInrToBdy[1]

Q3 0.28416400 ActNor.EstInrToBdy[2]

Q4 0.47216600 ActNor.EstInrToBdy[3]

GPS sec 1291854753 ActNor.EstTime

UTC time 12/13/2020 00:32:19 output

MPS Diff 0.508 deg

MPS Cmd Vector X -0.167170000

MPS Cmd Vector Y -0.900914000

MPS Cmd Vector Z -0.400509000

CSS Angle TLM 0.894381

CSS Sun-Pointing Angle 1.788762

  07 Dec 20 @ 02:00:00

CSS Angle TLM 1.6554

CSS Sun-Pointing Angle 3.3108

  13 Dec 20 @ 00:30:00

Pre-Burn

Thruster 1 1408 07 Dec 20 @ 02:00:00

Thruster 2 1360

Thruster 3 1440

Thruster 4 1488

Post-Burn   `

Thruster 1 1680 13 Dec 20 @ 00:30:00

Thruster 2 1632

Thruster 3 1760

Thruster 4 1808

Number of Pulses

Thruster 1 272

Thruster 2 272

Thruster 3 320

Thruster 4 320

Thruster Pairs 

Thruster 1 & 2 544

Thruster 3 & 4 640

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430