Hi all,
I have looked at the orbit 0532 ATS file, IBEX_2021_175_o0532a_v001.scr and I approve.
The constraint violations in IBEX_2021_175_o0532a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2021_175_o0532a_v001.scr match those in the STF, IBEX_2021_175_o0532a_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_2021_175_o0532a_v001.oef and as verified with ibex_orbit.
There are 1 star tracker outages this orbit. Outage begins at 2021-07-03 23:21:31 and lasts for 8.6 hours.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit532_Contacts.txt for all contacts (4).
No Battery Balancing this orbit
The Sun Precession maneuver at perigee of orbit 0531 left us pointing in safe directions for the orbit 0532 arc A ascending and descending sequences:
ibex_rotate -o -r +93.436 -d +23.407 -w ibex-sun -t 2021/06:25:09:42:27
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.055001,+0.916056,+0.397260
which is R.A. +93.436 Decl. +23.407
missing R.A. +94.081 Decl. +23.364 (ibex-sun)
error is R.A. +0.645 Decl. +0.043
for a total 0.593 deg
ibex_rotate -o -r +93.436 -d +23.407 -w ibex-sun -t 2021/06:29:01:43:25
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.055001,+0.916056,+0.397260
which is R.A. +93.436 Decl. +23.407
missing R.A. +97.881 Decl. +23.244 (ibex-sun)
error is R.A. +4.445 Decl. +0.163
for a total 4.085 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 -0.09388,0.917383,0.386775 -w ibex-sun -t 2021/06:29:03:26:33
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.093880,+0.917383,+0.386775
which is R.A. +95.843 Decl. +22.754
missing R.A. +97.957 Decl. +23.241 (ibex-sun)
error is R.A. +2.114 Decl. +0.487
for a total 2.006 deg
ibex_rotate -o -u -0.09388,0.917383,0.386775 -w ibex-sun -t 2021/06:29:05:01:39
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.093880,+0.917383,+0.386775
which is R.A. +95.843 Decl. +22.754
missing R.A. +98.026 Decl. +23.239 (ibex-sun)
error is R.A. +2.183 Decl. +0.485
for a total 2.068 deg
ibex_rotate -o -u -0.09388,0.917383,0.386775 -w ibex-sun -t 2021/07:03:16:42:22
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.093880,+0.917383,+0.386775
which is R.A. +95.843 Decl. +22.754
missing R.A. +102.727 Decl. +22.935 (ibex-sun)
error is R.A. +6.884 Decl. +0.181
for a total 6.346 deg
The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0533 apogee:
ibex_rotate -o -u -0.170334,0.907633,0.383651 -w ibex-sun -t 2021/07:03:20:07:44
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.170334,+0.907633,+0.383651
which is R.A. +100.629 Decl. +22.560
missing R.A. +102.866 Decl. +22.918 (ibex-sun)
error is R.A. +2.237 Decl. +0.358
for a total 2.094 deg
ibex_rotate -o -u -0.170334,0.907633,0.383651 -w ibex-sun -t 2021-07-08T17:24:35
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.170334,+0.907633,+0.383651
which is R.A. +100.629 Decl. +22.560
missing R.A. +107.827 Decl. +22.439 (ibex-sun)
error is R.A. +7.198 Decl. +0.121
for a total 6.650 deg
There is no overlap with orbit 0531 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, 2021-June-11 at 13:50
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 #532 ATS Approval (25 June – 04 July, 2021)
Caution - External Email
All,
Attached are the planning files for Orbit #532. Please respond to this thread with comments and approvals.
Approvals are required by COB on 14 June 2021
Please note the following:
- No Battery Balancing this orbit
-
Command Load Constraint Violation Report (CCVR)
IBEX_2021_175_o0532a_v001.ccvr
# Input files: 1
# IBEX_2021_175_o0532a_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 2021/06/25 07:06:45 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2021/06/29 04:31:39 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
