All,

    The perigee contacts were nominal for CMD & TLM. The inertial maneuver was successful.

We were able to dump the SSR for this orbit and redump the data from orbit536. The ATS for Orbit #539 has been uplinked. The clock has been set and FDC totals were reset. The 18 day master timer was reset back to zero.

Tasks Accomplished:

CAR #1183 – Redump Orbit 538 SSR

CAR # 1184 – Orbit #539 ATS

    IBEX_2021_239_o0539a_v001 93 cmds

SSR Dump -> Dump New

Reset Master Timer

Set Spacecraft Clock

Reset FDC totals

Results from the Inertial Maneuver:

Q1 -0.21962800 ActNor.EstInrToBdy[0]

Q2 -0.57569400 ActNor.EstInrToBdy[1]

Q3 -0.18919800 ActNor.EstInrToBdy[2]

Q4 0.76455500 ActNor.EstInrToBdy[3]

GPS sec 1313345842 ActNor.EstTime

UTC time 08/18/2021 18:17:08 output

MPS Cmd Vector X -0.799940000

MPS Cmd Vector Y 0.554091000

MPS Cmd Vector Z 0.230389000

MPS Diff 0.611 deg

CSS Angle TLM 0.301965

CSS Sun-Pointing Angle 0.60393

14 Aug 21 @ 03:00:00

CSS Angle TLM 0.290066

CSS Sun-Pointing Angle 0.580132

18 Aug 21 @ 18:00:00

Pre-Burn

Thruster 1 6480 14 Aug 21 @ 03:00:00

Thruster 2 6352

Thruster 3 7200

Thruster 4 7328

Post-Burn

Thruster 1 6752 18 Aug 21 @ 18:00:00

Thruster 2 6592

Thruster 3 7504

Thruster 4 7664

Number of Pulses

Thruster 1 272

Thruster 2 240

Thruster 3 304

Thruster 4 336

Thruster Pairs

Thruster 1 & 2 512

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