All,

   The perigee contacts were nominal for CMD & TLM. The inertial maneuver was successful. The ATS’s for Orbit # 514 were uplinked. The SSR was dumped twice and the Flight computer back orbit data was dumped. The 18 day timer reset as planned and the timed command count @LOS was 180 commands.

Tasks Accomplished:

SSR Dump -> Dump New 2ea

Flight Computer Back orbit data dumped

CAR # 1144 Orbit #514 ATS uplink

    IBEX_2021_011_o0514a_BUS_V001 51 Cmds

    IBEX_2021_011_o0514a_INST_V001 46 Cmds

Set Spacecraft Clock

Reset FDC Totals

Results from the Inertial Maneuver:

Q1 0.57631000 ActNor.EstInrToBdy[0]

Q2 0.59995700 ActNor.EstInrToBdy[1]

Q3 -0.29354600 ActNor.EstInrToBdy[2]

Q4 0.47090200 ActNor.EstInrToBdy[3]

GPS sec 1293657676 ActNor.EstTime

UTC time 01/02/2021 21:21:02 output

MPS Cmd Vector X 0.229593000

MPS Cmd Vector Y -0.888923000

MPS Cmd Vector Z -0.396363000

MPS Diff 0.797 deg

CSS Angle TLM 0.568551

CSS Sun-Pointing Angle 1.137102

29 Dec 20 @ 19:30:00

CSS Angle TLM 0.885365

CSS Sun-Pointing Angle 1.77073

02 Jan 21 @ 21:00:00

Pre-Burn

Thruster 1 2592 29 Dec 20 @ 19:30:00

Thruster 2 2496

Thruster 3 3040

Thruster 4 3136

Post-Burn `

Thruster 1 2976 02 Jan 21 @ 21:00:00

Thruster 2 2880

Thruster 3 3440

Thruster 4 3536

Number of Pulses

Thruster 1 384

Thruster 2 384

Thruster 3 400

Thruster 4 400

Thruster Pairs

Thruster 1 & 2 768

Thruster 3 & 4 800

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430