All,

   The perigee contacts were nominal, and the inertial maneuver was successful. During the first contact we were able to dump the SSR for orbit 607 and re-dump orbit 606. The star tracker hot lines data base was updated, and we updated the back orbit data collection for the star tracker. The ATS for orbit 609 was uplinked. The flight computer back orbit buffer was dumped on the second contact.

 

Tasks Accomplished:

Reset FDC Totals

Reset Master Timer

SSR Dump -> Dump New

Flight Computer Back Orbit Dump

CAR #1311 update Star Tracker Suppressed Hotlines

CAR #1315 Redump SSR for Orbit 606

CAR #1316 Increase Star Tracker House Keeping Packets in the Back Orbit

CAR #1317 Orbit #609 ATS Upload

   IBEX_2023_146_o0609a_v001 98 Cmds

CAR #1318 Orbit 608 Apogee Contact ATS

   IBEX_2023_136_o0608a_APO_Contact_v001 5 Cmds

 

Results for the Inertial Maneuver

Q1 -0.46013400 ActNor.EstInrToBdy[0]

Q2 0.36234000 ActNor.EstInrToBdy[1]

Q3 -0.02543390 ActNor.EstInrToBdy[2]

Q4 0.81014800 ActNor.EstInrToBdy[3]

     

GPS sec 1368241244 ActNor.EstTime 

UTC time 05/16/2023 03:00:30 output

 

MPS Diff 0.521 deg

 

MPS Cmd Vector X 0.606895000

MPS Cmd Vector Y 0.732751000

MPS Cmd Vector Z 0.307822000

 

CSS Angle TLM 0.333378

CSS Sun-Pointing Angle 0.666756

  11 May 23@13:00:00

 

CSS Angle TLM 0.217606

CSS Sun-Pointing Angle 0.435212

  16 May 23@03:00:00

 

Pre-Burn   

Thruster 1 4224 11 May 23@13:00:00

Thruster 2 4144

Thruster 3 5680

Thruster 4 5760

Post-Burn  

Thruster 1 4512 16 May 23@03:00:00

Thruster 2 4432

Thruster 3 5984

Thruster 4 6064

Number of Pulses  

Thruster 1 288

Thruster 2 288

Thruster 3 304

Thruster 4 304

Thruster Pairs 

Thruster 1 & 2 576

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