Hi all,
I have looked at the orbit 0609 ATS file, IBEX_2023_145_o0609a_v001.scr and I approve.
The constraint violations in IBEX_2023_145_609a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2023_145_o0609a_v001.scr match those in the STF, IBEX_2023_145_o0609a_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_145_o0609a_v001.oef and as verified
with ibex_orbit.
There is 1 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_Orbit609_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 0608 left us pointing in safe directions for the orbit 0609 arc A ascending and descending sequences:
ibex_rotate -o -u 0.474042,0.811388,0.341955 -w ibex-sun -t 2023/05:26:04:37:14
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.474042,+0.811388,+0.341955
which is R.A. +59.705 Decl. +19.996
missing R.A. +62.386 Decl. +20.992 (ibex-sun)
error is R.A. +2.681 Decl. +0.996
for a total 2.701 deg
ibex_rotate -o -u 0.474042,0.811388,0.341955 -w ibex-sun -t 2023/05:29:21:20:45
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.474042,+0.811388,+0.341955
which is R.A. +59.705 Decl. +19.996
missing R.A. +66.151 Decl. +21.636 (ibex-sun)
error is R.A. +6.446 Decl. +1.640
for a total 6.244 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 0.405835,0.842434,0.354405 -w ibex-sun -t 2023/05:29:23:03:53
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.405835,+0.842434,+0.354405
which is R.A. +64.278 Decl. +20.757
missing R.A. +66.225 Decl. +21.648 (ibex-sun)
error is R.A. +1.947 Decl. +0.892
for a total 2.022 deg
ibex_rotate -o -u 0.405835,0.842434,0.354405 -w ibex-sun -t 2023/05:30:00:38:59
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.405835,+0.842434,+0.354405
which is R.A. +64.278 Decl. +20.757
missing R.A. +66.293 Decl. +21.660 (ibex-sun)
error is R.A. +2.015 Decl. +0.903
for a total 2.085 deg
ibex_rotate -o -u 0.405835,0.842434,0.354405 -w ibex-sun -t 2023/06:03:12:13:11
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.405835,+0.842434,+0.354405
which is R.A. +64.278 Decl. +20.757
missing R.A. +70.922 Decl. +22.294 (ibex-sun)
error is R.A. +6.644 Decl. +1.537
for a total 6.368 deg
The Sun precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0610 apogee:
ibex_rotate -o -r +71.036 -d +22.303 -w ibex-sun -t 2023/06:03:15:00:06
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.300663,+0.874973,+0.379505
which is R.A. +71.036 Decl. +22.303
missing R.A. +71.036 Decl. +22.303 (ibex-sun)
error is R.A. +0.000 Decl. +0.000
for a total 0.000 deg
ibex_rotate -o -r +71.036 -d +22.303 -w ibex-sun -t 2023-06-08T13:34:40
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.300663,+0.874973,+0.379505
which is R.A. +71.036 Decl. +22.303
missing R.A. +76.071 Decl. +22.834 (ibex-sun)
error is R.A. +5.035 Decl. +0.531
for a total 4.680 deg
There is no overlap with orbit 0608 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, May 12, 2023 at 12:57
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 #609 ATS Approval (26 May – 04 June 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 #609. Please respond to this thread with comments and approvals. Approvals are required by COB, 15 May 2023
Please note the following:
1.
Battery Balancing this Orbit
Begin
06/04/2023 03:00:00
– End 06/04/2023 04:30:00
2.
Command Load Constraint Violation Report (CCVR)
IBEX_2023_145_609a_v001.ccvr
# Input files: 1
# IBEX_2023_145_o0609a_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 2023/05/26 02:37:24 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2023/05/30 00:08:59 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.
Timothy E.Perry
CRS IBEX OCO-2
Mission Operations
Office (703) 406-5976
Cell (301) 606-1430