All,

  The perigee contacts were nominal for CMD and TLM. The inertial maneuver was successful. This perigee we increased the sample rate for 2 telemetry packets to collect thermal data during the eclipse. The SSR was dumped prior to and post eclipse. The Orbit 512 Bus and Instrument ATS’s were uplinked. We started the Hi background test.

Task’s accomplished:

CAR#1119 2021 ISN Season and Hi background sweep table uploads Pass#3

CAR #1138 Change telemetry rates during orbit 510 eclipse

CAR # 1140 Upload ATS Orbit 512

   IBEX_2020_359_o0512a_BUS_V001 48 CMDS

   IBEX_2020_359_o0512a_INST_V001 46 CMDS

CAR# 1141 Dump Orbit 510 data

Dump Flight computer Back Orbit data

Results from the Inertial Maneuver:

Q1 0.06147810 ActNor.EstInrToBdy[0]

Q2 -0.83309000 ActNor.EstInrToBdy[1]

Q3 0.54144200 ActNor.EstInrToBdy[2]

Q4 0.09498260 ActNor.EstInrToBdy[3]

GPS sec 1292064876 ActNor.EstTime

UTC time 12/15/2020 10:54:22 output

MPS Cmd Vector X -0.087598000

MPS Cmd Vector Y -0.909906000

MPS Cmd Vector Z -0.405461000

MPS Diff 0.647 deg

CSS Angle TLM 1.6554

CSS Sun-Pointing Angle 3.3108

13 Dec 20 @ 00:30:00

CSS Angle TLM 1.63327

CSS Sun-Pointing Angle 3.26654

15 Dec 20 @ 10:30:00

Pre-Burn

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

Thruster 2 1632

Thruster 3 1760

Thruster 4 1808

Post-Burn `

Thruster 1 1952 15 Dec 20 @ 10:30:00

Thruster 2 1904

Thruster 3 2048

Thruster 4 2096

Number of Pulses

Thruster 1 272

Thruster 2 272

Thruster 3 288

Thruster 4 288

Thruster Pairs

Thruster 1 & 2 544

Thruster 3 & 4 576

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430