All,

   The perigee contacts were nominal for command and tlm. The inertial maneuver was successful. The SSR was dumped and the Orbit # 530 ATS’s have been uplinked.

Tasks Accomplished:

SSR Dump -> Dump_New

CAR # 1173 Orbit # 530 ATS Upload

  IBEX_2021_157_o0530a_BUS_V002

  IBEX_2021_157_o0530a_INST_V002

CAR #1172 SSR Redump Orbit #525

Reset FDC Totals

Results from the Inertial Maneuver:

Q1 -0.54587000 ActNor.EstInrToBdy[0]

Q2 -0.15062300 ActNor.EstInrToBdy[1]

Q3 -0.56296200 ActNor.EstInrToBdy[2]

Q4 0.60200600 ActNor.EstInrToBdy[3]

GPS sec 1306263651 ActNor.EstTime

UTC time 05/28/2021 19:00:37 output

MPS Cmd Vector X 0.426961000

MPS Cmd Vector Y 0.833207000

MPS Cmd Vector Z 0.351384000

MPS Diff 0.661 deg

CSS Angle TLM 0.297393

CSS Sun-Pointing Angle 0.594786

23 May 21 @ 13:00:00

CSS Angle TLM 0.383084

CSS Sun-Pointing Angle 0.766168

28 May 21 @ 19:00:00

Pre-Burn

Thruster 1 1680 23 May 21 @ 13:00:00

Thruster 2 1648

Thruster 3 1792

Thruster 4 1824

Post-Burn

Thruster 1 1952 28 May 21 @ 19:00:00

Thruster 2 1920

Thruster 3 2096

Thruster 4 2128

Number of Pulses

Thruster 1 272

Thruster 2 272

Thruster 3 304

Thruster 4 304

Thruster Pairs

Thruster 1 & 2 544

Thruster 3 & 4 608

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430