All,

   The perigee contacts were nominal for CMD & TLM. The inertial maneuver and master reset commands executed successfully. SSR was dumped for the previous orbit and a redump for Orbit 526.

The following objectives were accomplished:

1. CAR #1170  SSR_Re-Dump Orbit#  o0526

2. CAR #1171 Upload Orbit# 529 ATS

a. Bus: IBEX_2021_148_o0529a_BUS_v001 (376-428)

b. Inst; IBEX_2021_148_o0529a_INST_v001 (429-474)

3. SSR_Dump (NEW)

4. Dump_Backorbit

Results from the Inertial Maneuver:

Q1 0.01660470 ActNor.EstInrToBdy[0]

Q2 0.57764600 ActNor.EstInrToBdy[1]

Q3 0.66728500 ActNor.EstInrToBdy[2]

Q4 0.46987200 ActNor.EstInrToBdy[3]

GPS sec 1305471770 ActNor.EstTime

UTC time 05/19/2021 15:02:36 output

MPS Cmd Vector X 0.560428000

MPS Cmd Vector Y 0.763405000

MPS Cmd Vector Z 0.321142000

MPS Diff 0.826 deg

CSS Angle TLM 0.65132

CSS Sun-Pointing Angle 1.30264

14 Apr 21 @ 12:00:00

CSS Angle TLM 0.586842

CSS Sun-Pointing Angle 1.173684

19 Apr 21 @ 15:00:00

Pre-Burn

Thruster 1 1120 14 Apr 21 @ 12:00:00

Thruster 2 1088

Thruster 3 1200

Thruster 4 1232

Post-Burn

Thruster 1 1408 19 Apr 21 @ 15:00:00

Thruster 2 1376

Thruster 3 1520

Thruster 4 1552

Number of Pulses

Thruster 1 288

Thruster 2 288

Thruster 3 320

Thruster 4 320

Thruster Pairs

Thruster 1 & 2 576

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