All,

   The Perigee contacts were nominal for CMD & TLM. The inertial maneuver was successful. The SSR was dumped, but I was not able to complete the dump on the first contact. We were able to redump the missing data on the second pass. We completed pass 4 of CAR 1119 ISN Season 2021. The Hi was set back to normal sweep.

Tasks Accomplished:

CAR 1119 ISN season pass#4 Upload Hi Normal sweep table

CAR 1142 ATS upload Orbit 513

    IBEX_2021_002_o0513a_BUS_V001 38 cmds

    IBEX_2021_002_o0513a_INST_V001 46 cmds

CAR 1143 Dump orbit 511 remaining blocks

SSR Dump -> Dump New

Results from the Inertial maneuver:

Q1 0.35107600 ActNor.EstInrToBdy[0]

Q2 0.75776500 ActNor.EstInrToBdy[1]

Q3 -0.48033800 ActNor.EstInrToBdy[2]

Q4 0.26798100 ActNor.EstInrToBdy[3]

GPS sec 1292891582 ActNor.EstTime

UTC time 12/25/2020 00:32:48 output

MPS Cmd Vector X 0.070556000

MPS Cmd Vector Y -0.911137000

MPS Cmd Vector Z -0.406019000

MPS Diff 0.703 deg

CSS Angle TLM 1.015145

CSS Sun-Pointing Angle 2.03029

20 Dec 20 @ 02:30:00

CSS Angle TLM 1.39241

CSS Sun-Pointing Angle 2.78482

25 Dec 20 @ 00:30:00

Pre-Burn

Thruster 1 2064 20 Dec 20 @ 02:30:00

Thruster 2 2016

Thruster 3 2336

Thruster 4 2384

Post-Burn `

Thruster 1 2448 25 Dec 20 @ 00:30:00

Thruster 2 2400

Thruster 3 2736

Thruster 4 2784

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