All,

The 2 Perigee contacts were nominal for CMD and TLM. The Inertial maneuver was successful. For these contacts we used 2 strings. The contact on 26 Dec was on String-3 (Primary). We accomplished the following: ATS upload “IBEX_2019_005_o0433a_v1, SSR Dump, Reset Master Timer and set the downlink from 160k to 320k. The second contact on Dec 27 was on String-2 (Back-up). We did the following: Set SC Clock and reset FDC totals. We have completed the patching and testing of String-1 on 22 Dec 2018. The plan moving forward is starting Jan 1, 2019 will be on String-1 as primary and string-3 as back-up and string-2 will be ready for patching.

Q1 0.83428400 ActNor.EstInrToBdy[0]

Q2 0.01628180 ActNor.EstInrToBdy[1]

Q3 0.05065630 ActNor.EstInrToBdy[2]

Q4 0.54876100 ActNor.EstInrToBdy[3]

GPS sec 1229947341.000 ActNor.EstTime

MPS Cmd Vector X 0.108493000

MPS Cmd Vector Y -0.907965000

MPS Cmd Vector Z -0.404759000

MPS Diff 0.851

CSS Angle TLM 1.66389

CSS Sun-Pointing Angle 3.32778

22 Dec 18 @22:00

CSS Angle TLM 1.08336

CSS Sun-Pointing Angle 2.16672

27 Dec 18 @12:00

Pre-Burn

Thruster 1 2880 22 Dec 18 @22:00

Thruster 2 2832

Thruster 3 3280

Thruster 4 3328

Post-Burn

Thruster 1 3312 27 Dec 18 @12:00

Thruster 2 3216

Thruster 3 3696

Thruster 4 3792

Number of Pulses

Thruster 1 432

Thruster 2 384

Thruster 3 416

Thruster 4 464

Thruster Pairs

Thruster 1 & 2 816

Thruster 3 & 4 880

Timothy E. Perry

Mission Operations

CRS, IBEX, OCO-2 & TESS

RAPTOR Test Team

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430

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