Hi all,
I have looked at the orbit 0611 ATS file, IBEX_2023_164_o0611a_v001.scr and I approve.
The constraint violations in IBEX_2023_164_o0611a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2023_164_o0611a_v001.scr match those in the STF, IBEX_2023_164_o0611a_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_164_o0611a_v001.oef and as verified
with ibex_orbit.
There is 1 star tracker outage this orbit. It lasts for ~6.7 hours and begins ~7.1 hours after the repointing perigee repointing maneuver.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit611_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 0610 left us pointing in safe directions for the orbit 0611 arc A ascending and descending sequences:
ibex_rotate -o -u 0.185086,0.905198,0.382571 -w ibex-sun -t 2023/06:13:14:52:55
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.185086,+0.905198,+0.382571
which is R.A. +78.444 Decl. +22.493
missing R.A. +81.302 Decl. +23.175 (ibex-sun)
error is R.A. +2.858 Decl. +0.682
for a total 2.721 deg
ibex_rotate -o -u 0.185086,0.905198,0.382571 -w ibex-sun -t 2023/06:17:08:34:21
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.185086,+0.905198,+0.382571
which is R.A. +78.444 Decl. +22.493
missing R.A. +85.164 Decl. +23.372 (ibex-sun)
error is R.A. +6.720 Decl. +0.879
for a total 6.250 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 0.109502,0.915867,0.38626 -w ibex-sun -t 2023/06:17:10:17:29
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.109502,+0.915867,+0.386260
which is R.A. +83.182 Decl. +22.722
missing R.A. +85.240 Decl. +23.375 (ibex-sun)
error is R.A. +2.058 Decl. +0.653
for a total 2.003 deg
ibex_rotate -o -u 0.109502,0.915867,0.38626 -w ibex-sun -t 2023/06:17:11:52:35
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.109502,+0.915867,+0.386260
which is R.A. +83.182 Decl. +22.722
missing R.A. +85.310 Decl. +23.378 (ibex-sun)
error is R.A. +2.128 Decl. +0.656
for a total 2.065 deg
ibex_rotate -o -u 0.109502,0.915867,0.38626 -w ibex-sun -t 2023/06:22:01:43:32
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.109502,+0.915867,+0.386260
which is R.A. +83.182 Decl. +22.722
missing R.A. +90.156 Decl. +23.451 (ibex-sun)
error is R.A. +6.974 Decl. +0.729
for a total 6.456 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0612 apogee:
ibex_rotate -o -u 0.030138,0.920624,0.389285 -w ibex-sun -t 2023/06:22:04:29:18
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.030138,+0.920624,+0.389285
which is R.A. +88.125 Decl. +22.910
missing R.A. +90.272 Decl. +23.447 (ibex-sun)
error is R.A. +2.147 Decl. +0.537
for a total 2.045 deg
ibex_rotate -o -u 0.030138,0.920624,0.389285 -w ibex-sun -t 2023-06-27T02:58:04
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.030138,+0.920624,+0.389285
which is R.A. +88.125 Decl. +22.910
missing R.A. +95.313 Decl. +23.363 (ibex-sun)
error is R.A. +7.188 Decl. +0.453
for a total 6.625 deg
There is no overlap with orbit 0610 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: Wednesday, May 31, 2023 at 16:02
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 <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 #611 ATS Approval (13 - 22 June 2023)
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 #611. Please respond to this thread with comments and approvals. Approvals are required by COB, 02 June 2023
Please note the following:
1.
Battery Balancing this Orbit.
Begin
2023/06/22 12:00:00– End 2023/06/22 13:30:00
2.
Command Load Constraint Violation Report (CCVR)
IBEX_2023_164_o0611a_v001.ccvr
# Input files: 1
# IBEX_2023_164_o0611a_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 2023/06/13 12:58:18 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2023/06/17 11:22:35 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.
Timothy E.Perry
CRS IBEX OCO-2
Mission Operations
Office (703) 406-5976
Cell (301) 606-1430