Hi all,

I have looked at the orbit 0573 ATS file, IBEX_2022_182_o0573a_v001.scr and I approve.

The constraint violations in IBEX_2022_182_o0573a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.

The PL commands in IBEX_2022_182_o0573a_v001.scr match those in the STF, IBEX_2022_182_o0573a_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_182_o0573a_v001.oef and as verified with ibex_orbit.

There is 1 star tracker outages this orbit lasting ~6 hours beginning ~8.5 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_Orbit573_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 0572 left us pointing in safe directions for the orbit 0573 arc A ascending and descending sequences:

ibex_rotate -o -u -0.126906,0.913625,0.386244 -w ibex-sun -t 2022/07:02:04:28:54

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. +100.853 Decl. +23.041 (ibex-sun)

error is R.A. +2.945 Decl. +0.320

for a total 2.732 deg

ibex_rotate -o -u -0.126906,0.913625,0.386244 -w ibex-sun -t 2022/07:05:16:32:46

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. +104.432 Decl. +22.781 (ibex-sun)

error is R.A. +6.524 Decl. +0.060

for a total 6.016 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 -0.198474,0.903162,0.380667 -w ibex-sun -t 2022/07:05:18:15:54

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.198474,+0.903162,+0.380667

which is R.A. +102.394 Decl. +22.375

missing R.A. +104.507 Decl. +22.775 (ibex-sun)

error is R.A. +2.113 Decl. +0.400

for a total 1.991 deg

ibex_rotate -o -u -0.198474,0.903162,0.380667 -w ibex-sun -t 2022/07:05:19:51:00

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.198474,+0.903162,+0.380667

which is R.A. +102.394 Decl. +22.375

missing R.A. +104.576 Decl. +22.770 (ibex-sun)

error is R.A. +2.182 Decl. +0.395

for a total 2.053 deg

ibex_rotate -o -u -0.198474,0.903162,0.380667 -w ibex-sun -t 2022/07:10:04:03:07

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.198474,+0.903162,+0.380667

which is R.A. +102.394 Decl. +22.375

missing R.A. +109.124 Decl. +22.289 (ibex-sun)

error is R.A. +6.730 Decl. +0.086

for a total 6.225 deg

The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0574 apogee:

ibex_rotate -o -u -0.271668,0.886539,0.374493 -w ibex-sun -t 2022/07:10:06:55:11

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.271668,+0.886539,+0.374493

which is R.A. +107.037 Decl. +21.993

missing R.A. +109.242 Decl. +22.270 (ibex-sun)

error is R.A. +2.205 Decl. +0.277

for a total 2.061 deg

ibex_rotate -o -u -0.271668,0.886539,0.374493 -w ibex-sun -t 2022-07-15T01:57:05

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.271668,+0.886539,+0.374493

which is R.A. +107.037 Decl. +21.993

missing R.A. +114.015 Decl. +21.616 (ibex-sun)

error is R.A. +6.978 Decl. +0.377

for a total 6.489 deg

There is no overlap with orbit 0572 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: Saturday, 2022-June-18 at 09:52
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: IBEX Orbit #573 ATS Approval (01 – 10 July 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 #573. Please respond to this thread with comments and approvals.

Approvals are required by COB, 21 June 2022

Please note the following:

No Battery Balancing this orbit

Begin 2022/07/10 14:00:00– End 2022/07/10 15:30:00

Command Load Constraint Violation Report (CCVR)

IBEX_2022_182_o0573a_v001.ccvr

# Input files: 1

# IBEX_2022_182_o0573a_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 2022/07/02 02:29:27 UTC

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

transition to science mode at 2022/07/05 19:21:00 UTC

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

OTHER MESSAGES

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

NO MESSAGES.