Hi all,

I have looked at the orbit 0562 ATS file, IBEX_2022_083_o0562a_v001.scr and I approve.

The constraint violations in IBEX_2022_083_o0562a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.

The PL commands in IBEX_2022_083_o0562a_v001.scr match those in the STF, IBEX_2022_083_o0562a_v002.stf.

Ascending and descending command sequences are consistent with each other, 15 Re ascending, the apogee maneuver time and 15 Re descending as determined from the OEF, IBEX_2022_083_o0562a_v001.oef and as verified with ibex_orbit.

There is 1 star tracker outage this orbit lasting ~4.5 hours and ending ~5.3 hours before the perigee maneuver.

The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit562_Contacts.txt for all contacts (2).

No Battery Balancing this orbit.

The Inertial maneuver at perigee of orbit 0561 left us pointing in safe directions for the orbit 0562 arc A ascending and descending sequences:

ibex_rotate -o -u 0.999527,0.030573,0.003438 -w ibex-sun -t 2022/03:25:07:53:53

Quaternion +0.000000,+0.000000,+0.000000,+0.000000

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.999527,+0.030573,+0.003438

which is R.A. +1.752 Decl. +0.197

missing R.A. +3.965 Decl. +1.697 (ibex-sun)

error is R.A. +2.213 Decl. +1.500

for a total 2.673 deg

ibex_rotate -o -u 0.999527,0.030573,0.003438 -w ibex-sun -t 2022/03:29:00:29:17

Quaternion +0.000000,+0.000000,+0.000000,+0.000000

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.999527,+0.030573,+0.003438

which is R.A. +1.752 Decl. +0.197

missing R.A. +7.431 Decl. +3.212 (ibex-sun)

error is R.A. +5.679 Decl. +3.015

for a total 6.427 deg

The Inertial precession maneuver at apogee leaves us pointing in safe directions at the time of the maneuver and for arc B ascending and descending sequences:

ibex_rotate -o -u 0.99421,0.102145,0.033365 -w ibex-sun -t 2022/03:29:02:12:25

Quaternion +0.000000,+0.000000,+0.000000,+0.000000

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.994210,+0.102145,+0.033365

which is R.A. +5.866 Decl. +1.912

missing R.A. +7.496 Decl. +3.242 (ibex-sun)

error is R.A. +1.630 Decl. +1.330

for a total 2.103 deg

ibex_rotate -o -u 0.99421,0.102145,0.033365 -w ibex-sun -t 2022/03:29:03:47:31

Quaternion +0.000000,+0.000000,+0.000000,+0.000000

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.994210,+0.102145,+0.033365

which is R.A. +5.866 Decl. +1.912

missing R.A. +7.557 Decl. +3.269 (ibex-sun)

error is R.A. +1.691 Decl. +1.357

for a total 2.166 deg

ibex_rotate -o -u 0.99421,0.102145,0.033365 -w ibex-sun -t 2022/04:02:14:59:25

Quaternion +0.000000,+0.000000,+0.000000,+0.000000

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.994210,+0.102145,+0.033365

which is R.A. +5.866 Decl. +1.912

missing R.A. +11.526 Decl. +4.964 (ibex-sun)

error is R.A. +5.660 Decl. +3.052

for a total 6.421 deg

The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0563 apogee:

ibex_rotate -o -u 0.982755,0.173039,0.065194 -w ibex-sun -t 2022/04:02:18:45:04

Quaternion +0.000000,+0.000000,+0.000000,+0.000000

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.982755,+0.173039,+0.065194

which is R.A. +9.986 Decl. +3.738

missing R.A. +11.663 Decl. +5.015 (ibex-sun)

error is R.A. +1.677 Decl. +1.277

for a total 2.104 deg

ibex_rotate -o -u 0.982755,0.173039,0.065194 -w ibex-sun -t 2022-04-07T14:44:28

Quaternion +0.000000,+0.000000,+0.000000,+0.000000

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.982755,+0.173039,+0.065194

which is R.A. +9.986 Decl. +3.738

missing R.A. +16.181 Decl. +6.900 (ibex-sun)

error is R.A. +6.195 Decl. +3.162

for a total 6.931 deg

There is no overlap with orbit 0561 commands.

Command Approval Checklist is attached.

Carol

Carol Weaver

University of New Hampshire

503.902.8492

From: Perry, Timothy E [US] (SP) <Timothy.Perry@ngc.com>
Date: Friday, 2022-March-11 at 10:54
To: Carol Weaver <carol.weaver@unh.edu>, Chubin, Eric [US] (SP) <Eric.Chubin@ngc.com>, David Heirtzler <David.Heirtzler@unh.edu>, ADS-IBEX@l3harris.com <ADS-IBEX@l3harris.com>, IBEXOPS@gmail.com <IBEXOPS@gmail.com>, isocops@lists.sr.unh.edu <isocops@lists.sr.unh.edu>, fair-play@comcast.net <fair-play@comcast.net>, kwfairchild@gmail.com <kwfairchild@gmail.com>, Kenneth Fairchild <Ken.Fairchild@unh.edu>, angoldconsulting@earthlink.net <angoldconsulting@earthlink.net>, Paul.Janzen@mso.umt.edu <Paul.Janzen@mso.umt.edu>, Perry, Timothy E [US] (SP) <Timothy.Perry@ngc.com>, Tyler, Ryan S [US] (SP) <Ryan.Tyler@ngc.com>, Wesley, Sheral R [US] (SP) <Sheral.Wesley@ngc.com>, Wynn, Reese [US] (SP) <Reese.Wynn@ngc.com>
Subject: IBEX Orbit #562 ATS Approval (24 Mar – 03 Apr 2022)

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All,

Attached are the planning files for Orbit #562. Please respond to this thread with comments and approvals.

Approvals are required by COB, 14 Mar 2022

Please note the following:

No Battery Balancing this orbit

Command Load Constraint Violation Report (CCVR)

IBEX_2022_083_o0562a_v001.ccvr

# Input files: 1

# IBEX_2022_083_o0562a_v001.scr

==========================

HARD CONSTRAINT VIOLATIONS

==========================

NO VIOLATIONS.

==========================

SOFT CONSTRAINT VIOLATIONS

==========================

IBX-CLC-016: No command to enable spin pulse protection was found after

transition to science mode at 2022/03/25 04:36:31 UTC

IBX-CLC-016: No command to enable spin pulse protection was found after

transition to science mode at 2022/03/29 03:17:31 UTC

==============

OTHER MESSAGES

==============

NO MESSAGES.

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430