Hi all,

I have looked at the orbit 0572 ATS file, IBEX_2022_173_o0572a_v001.scr and I approve.

The constraint violations in IBEX_2022_173_o0572a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.

The PL commands in IBEX_2022_173_o0572a_v001.scr match those in the STF, IBEX_2022_173_o0572a_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_173_o0572a_v001.oef and as verified with ibex_orbit.

There is 1 star tracker outage this orbit lasting for ~6.9 hours and beginning ~7 hours after the perigee maneuver.

The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit572_Contacts.txt for all contacts (4).

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 0571 left us pointing in safe directions for the orbit 0572 arc A ascending and descending sequences:

ibex_rotate -o -u 0.023099,0.920807,0.389333 -w ibex-sun -t 2022/06:23:03:33:24

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.023099,+0.920807,+0.389333

which is R.A. +88.563 Decl. +22.913

missing R.A. +91.474 Decl. +23.409 (ibex-sun)

error is R.A. +2.911 Decl. +0.496

for a total 2.722 deg

ibex_rotate -o -u 0.023099,0.920807,0.389333 -w ibex-sun -t 2022/06:26:17:24:44

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.023099,+0.920807,+0.389333

which is R.A. +88.563 Decl. +22.913

missing R.A. +95.173 Decl. +23.358 (ibex-sun)

error is R.A. +6.610 Decl. +0.445

for a total 6.094 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 -0.050644,0.920241,0.388063 -w ibex-sun -t 2022/06:26:19:07:52

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.050644,+0.920240,+0.388063

which is R.A. +93.150 Decl. +22.834

missing R.A. +95.249 Decl. +23.357 (ibex-sun)

error is R.A. +2.099 Decl. +0.523

for a total 2.000 deg

ibex_rotate -o -u -0.050644,0.920241,0.388063 -w ibex-sun -t 2022/06:26:20:42:58

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.050644,+0.920240,+0.388063

which is R.A. +93.150 Decl. +22.834

missing R.A. +95.319 Decl. +23.355 (ibex-sun)

error is R.A. +2.169 Decl. +0.521

for a total 2.062 deg

ibex_rotate -o -u -0.050644,0.920241,0.388063 -w ibex-sun -t 2022/07:01:06:21:01

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.050644,+0.920240,+0.388063

which is R.A. +93.150 Decl. +22.834

missing R.A. +99.964 Decl. +23.137 (ibex-sun)

error is R.A. +6.814 Decl. +0.303

for a total 6.280 deg

The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0573 apogee:

ibex_rotate -o -u -0.126906,0.913625,0.386244 -w ibex-sun -t 2022/07:01:09:08:55

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.126906,+0.913625,+0.386244

which is R.A. +97.908 Decl. +22.721

missing R.A. +100.081 Decl. +23.125 (ibex-sun)

error is R.A. +2.173 Decl. +0.404

for a total 2.041 deg

ibex_rotate -o -u -0.126906,0.913625,0.386244 -w ibex-sun -t 2022-07-06T04:00:05

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.126906,+0.913625,+0.386244

which is R.A. +97.908 Decl. +22.721

missing R.A. +104.932 Decl. +22.741 (ibex-sun)

error is R.A. +7.024 Decl. +0.020

for a total 6.478 deg

There is no overlap with orbit 0571 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-June-10 at 12:02
To: Carol Weaver <carol.weaver@unh.edu>, Chubin, Eric [US] (SP) <Eric.Chubin@ngc.com>, David Heirtzler <David.Heirtzler@unh.edu>, IBEX FDG Group <ADS-IBEX@l3harris.com>, IBEXOPS <IBEXOPS@gmail.com>, ISOC <isocops@lists.sr.unh.edu>, Ken Fairchild <fair-play@comcast.net>, Ken Fairchild (kwfairchild@gmail.com) <kwfairchild@gmail.com>, Kenneth Fairchild <Ken.Fairchild@unh.edu>, Nigel Angold <angoldconsulting@earthlink.net>, Paul Janzen <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: All, Attached are the planning files for Orbit #572. Please respond to this thread with comments and approvals. Approvals are required by 1500, 13 June 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.

Please note the following:

No Battery Balancing this orbit

Begin 2022/07/01 16:00:00 – End 2022/07/01 17:30:00

Command Load Constraint Violation Report (CCVR)

IBEX_2022_173_o0572a_v001.ccvr

# Input files: 1

# IBEX_2022_173_o0572a_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 2022/06/23 01:34:50 UTC

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

transition to science mode at 2022/06/26 20:12:58 UTC

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

OTHER MESSAGES

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

NO MESSAGES.