Hi all,
The angle at descending after the sun procession maneuver is 4.070 deg.
I have looked at the orbit 0667 ATS file, IBEX_2024_308_o0667a_v001.scr and I approve.
The constraint violations in IBEX_2024_308_0667_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2024_308_o0667a_v001.scr match those in the STF, IBEX_2024_308_o0667a_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_2024_308_o0667a_v001.oef
and as verified with ibex_orbit.
There is 1 star tracker outage this orbit. Outage begins at 2024-11-05 02:28:27 and lasts for 110.7 hours.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit667_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 0666 left us pointing in safe directions for the orbit 0667 arc A ascending and descending sequences:
ibex_rotate -o -u -0.775356,-0.575809,-0.259358 -w ibex-sun -t 2024/11:04:09:39:13
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.775356,-0.575809,-0.259358
which is R.A. +216.599 Decl. -15.032
missing R.A. +219.709 Decl. -15.498 (ibex-sun)
error is R.A. +3.110 Decl. +0.466
for a total 3.037 deg
ibex_rotate -o -u -0.775356,-0.575809,-0.259358 -w ibex-sun -t 2024/11:08:10:11:46
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.775356,-0.575809,-0.259358
which is R.A. +216.599 Decl. -15.032
missing R.A. +223.680 Decl. -16.642 (ibex-sun)
error is R.A. +7.081 Decl. +1.610
for a total 7.000 deg
The Sun 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 -r +223.757 -d -16.663 -w ibex-sun -t 2024/11:08:12:03:12
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.691949,-0.662559,-0.286742
which is R.A. +223.757 Decl. -16.663
missing R.A. +223.757 Decl. -16.663 (ibex-sun)
error is R.A. +0.000 Decl. +0.000
for a total 0.000 deg
ibex_rotate -o -r +223.757 -d -16.663 -w ibex-sun -t 2024/11:08:13:30:00
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.691949,-0.662559,-0.286742
which is R.A. +223.757 Decl. -16.663
missing R.A. +223.817 Decl. -16.680 (ibex-sun)
error is R.A. +0.060 Decl. +0.017
for a total 0.060 deg
ibex_rotate -o -r +223.757 -d -16.663 -w ibex-sun -t 2024/11:12:13:34:20
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.691949,-0.662559,-0.286742
which is R.A. +223.757 Decl. -16.663
missing R.A. +227.850 Decl. -17.797 (ibex-sun)
error is R.A. +4.093 Decl. +1.134
for a total 4.070 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0668 apogee:
ibex_rotate -o -u -0.664446,-0.682073,-0.305429 -w ibex-sun -t 2024/11:12:15:32:37
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.664446,-0.682073,-0.305429
which is R.A. +225.750 Decl. -17.784
missing R.A. +227.937 Decl. -17.823 (ibex-sun)
error is R.A. +2.187 Decl. +0.039
for a total 2.082 deg
ibex_rotate -o -u -0.664446,-0.682073,-0.305429 -w ibex-sun -t 2024-11-17T17:48:47
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.664446,-0.682073,-0.305429
which is R.A. +225.750 Decl. -17.784
missing R.A. +233.200 Decl. -19.116 (ibex-sun)
error is R.A. +7.450 Decl. +1.332
for a total 7.191 deg
There is no overlap with orbit 0666 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492