Hi all,

I have looked at the orbit 0563 ATS file, IBEX_2022_092_o0563a_v001.scr and I approve.

The constraint violations in IBEX_2022_092_o0563a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.

The PL commands in IBEX_2022_092_o0563a_v001.scr match those in the STF, IBEX_2022_093_o0563a_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_092_o0563a_v001.oef and as verified with ibex_orbit.

There is 1 star tracker outage this orbit lasting ~7.4 hours and ending 1.6 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_Orbit563_Contacts.txt for all contacts (3).

Battery Balancing is 90 minutes long, more than 2 hours away from payload descending macros, and more than 15 minutes away from a maneuver.

The Inertial maneuver at perigee of orbit 0562 left us pointing in safe directions for the orbit 0563 arc A ascending and descending sequences:

ibex_rotate -o -u 0.982755,0.173039,0.065194 -w ibex-sun -t 2022/04:03:09:18:06

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. +12.215 Decl. +5.221 (ibex-sun)

error is R.A. +2.229 Decl. +1.483

for a total 2.671 deg

ibex_rotate -o -u 0.982755,0.173039,0.065194 -w ibex-sun -t 2022/04:07:03:11:22

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. +15.738 Decl. +6.710 (ibex-sun)

error is R.A. +5.752 Decl. +2.972

for a total 6.452 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 0.965272,0.243499,0.094647 -w ibex-sun -t 2022/04:07:04:54:30

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.965272,+0.243499,+0.094647

which is R.A. +14.158 Decl. +5.431

missing R.A. +15.804 Decl. +6.738 (ibex-sun)

error is R.A. +1.646 Decl. +1.307

for a total 2.095 deg

ibex_rotate -o -u 0.965272,0.243499,0.094647 -w ibex-sun -t 2022/04:07:06:29:36

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.965272,+0.243499,+0.094647

which is R.A. +14.158 Decl. +5.431

missing R.A. +15.865 Decl. +6.764 (ibex-sun)

error is R.A. +1.707 Decl. +1.333

for a total 2.158 deg

ibex_rotate -o -u 0.965272,0.243499,0.094647 -w ibex-sun -t 2022/04:11:19:36:55

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.965272,+0.243499,+0.094647

which is R.A. +14.158 Decl. +5.431

missing R.A. +19.947 Decl. +8.426 (ibex-sun)

error is R.A. +5.789 Decl. +2.995

for a total 6.479 deg

The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0564 apogee:

ibex_rotate -o -u 0.941418,0.312894,0.125818 -w ibex-sun -t 2022/04:11:23:14:58

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.941418,+0.312894,+0.125818

which is R.A. +18.385 Decl. +7.228

missing R.A. +20.079 Decl. +8.472 (ibex-sun)

error is R.A. +1.694 Decl. +1.244

for a total 2.089 deg

ibex_rotate -o -u 0.941418,0.312894,0.125818 -w ibex-sun -t 2022-04-16T17:36:56

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.941418,+0.312894,+0.125818

which is R.A. +18.385 Decl. +7.228

missing R.A. +24.567 Decl. +10.228 (ibex-sun)

error is R.A. +6.182 Decl. +3.000

for a total 6.806 deg

There is no overlap with orbit 0562 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: Tuesday, 2022-March-22 at 14:39
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 #563 ATS Approval ( 03 - 12 Apr 2022)

CAUTION: This email originated from outside of the University System. Do not click links or open attachments unless you recognize the sender and know the content is safe.

All,

Attached are the planning files for Orbit #563. Please respond to this thread with comments and approvals.

Approvals are required by COB, 23 Mar 2022

Please note the following:

Battery Balancing this orbit

Begin 2022/04/12 04:00:00– End 2022/04/12 05:30:00

Command Load Constraint Violation Report (CCVR)

IBEX_2022_092_o0563a_v001.ccvr

# Input files: 1

# IBEX_2022_092_o0563a_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 2022/04/03 06:18:32 UTC

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

transition to science mode at 2022/04/07 05:59:36 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