Hi all,
I have looked at the orbit 0599 ATS file, IBEX_2023_054_o0599a_v001.scr and I approve.
The constraint violations in IBEX_2023_054_o0599a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2023_054_o0599a_v001.scr match those in the STF, IBEX_2023_054_o0599a_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_2023_054_o0599a_v001.oef and as verified
with ibex_orbit.
No star tracker outage this orbit.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit599_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 0598 left us pointing in safe directions for the orbit 0599 arc A ascending and descending sequences:
ibex_rotate -o -u 0.906699,-0.382874,-0.17693 -w ibex-sun -t 2023/02:23:14:14:09
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.906699,-0.382874,-0.176930
which is R.A. +337.107 Decl. -10.191
missing R.A. +336.241 Decl. -9.928 (ibex-sun)
error is R.A. +0.866 Decl. +0.263
for a total 0.892 deg
ibex_rotate -o -u 0.906699,-0.382874,-0.17693 -w ibex-sun -t 2023/02:27:05:02:32
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.906699,-0.382874,-0.176930
which is R.A. +337.107 Decl. -10.191
missing R.A. +339.773 Decl. -8.516 (ibex-sun)
error is R.A. +2.666 Decl. +1.675
for a total 3.119 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 0.937875,-0.31461,-0.146325 -w ibex-sun -t 2023/02:27:06:45:40
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.937875,-0.314610,-0.146325
which is R.A. +341.456 Decl. -8.414
missing R.A. +339.840 Decl. -8.488 (ibex-sun)
error is R.A. +1.616 Decl. +0.074
for a total 1.600 deg
ibex_rotate -o -u 0.937875,-0.31461,-0.146325 -w ibex-sun -t 2023/02:27:08:20:46
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.937875,-0.314610,-0.146325
which is R.A. +341.456 Decl. -8.414
missing R.A. +339.902 Decl. -8.462 (ibex-sun)
error is R.A. +1.554 Decl. +0.048
for a total 1.537 deg
ibex_rotate -o -u 0.937875,-0.31461,-0.146325 -w ibex-sun -t 2023/03:03:18:51:07
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.937875,-0.314610,-0.146325
which is R.A. +341.456 Decl. -8.414
missing R.A. +343.943 Decl. -6.821 (ibex-sun)
error is R.A. +2.487 Decl. +1.593
for a total 2.934 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0600 apogee:
ibex_rotate -o -u 0.962011,-0.246322,-0.117728 -w ibex-sun -t 2023/03:03:21:47:32
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.962011,-0.246322,-0.117728
which is R.A. +345.638 Decl. -6.761
missing R.A. +344.054 Decl. -6.781 (ibex-sun)
error is R.A. +1.585 Decl. +0.020
for a total 1.574 deg
ibex_rotate -o -u 0.962011,-0.246322,-0.117728 -w ibex-sun -t 2023-03-08T16:43:32
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.962011,-0.246322,-0.117728
which is R.A. +345.638 Decl. -6.761
missing R.A. +348.619 Decl. -4.874 (ibex-sun)
error is R.A. +2.981 Decl. +1.887
for a total 3.514 deg
There is no overlap with orbit 0598 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: Thursday, February 9, 2023 at 13:21
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>, angoldconsulting <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 #599 ATS Approval (23 Feb - 04 Mar 2023)
CAUTION: This email originated from outside of the University System. Do not click links or open attachments unless you recognize
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All,
Attached are the planning files for Orbit #599. Please respond to this thread with comments and approvals.
Approvals are required by COB, 13 Feb 2023
Please note the following:
1.
Battery Balancing this orbit
Begin
2023/03/04 03:00:00– End 2023/03/04 04:30:00
Note the battery balancing was moved back a couple hours due to the scheduling of the contacts were around perigee on the
ascending side of the orbit.
2.
Command Load Constraint Violation Report (CCVR)
IBEX_2023_054_o0599a_v001.ccvr
# Input files:
1
#
IBEX_2023_054_o0599a_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 2023/02/23 12:02:34 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2023/02/27 07:50:46 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.