Hi all,
I have looked at the orbit 0643 ATS file, IBEX_2024_090_o0643a_v001.scr and I approve.
The constraint violations in IBEX_2024_090_o0643a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2024_090_o0643a_v001.scr match those in the STF, IBEX_2024_090_o0643a_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_090_o0643a_v001.oef and as verified
with ibex_orbit.
There is 1 star tracker outage this orbit. Outage begins at 2024-04-08 06:28:43 and lasts for 7.7 hours.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit643_Contacts.txt for all contacts (3).
No Battery Balancing this orbit.
The Inertial maneuver at perigee of orbit 0642 left us pointing in safe directions for the orbit 0643 arc A ascending and descending sequences:
ibex_rotate -o -u 0.99079,0.127538,0.045485 -w ibex-sun -t 2024/03:31:02:18:08
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.990790,+0.127538,+0.045485
which is R.A. +7.335 Decl. +2.607
missing R.A. +9.662 Decl. +4.139 (ibex-sun)
error is R.A. +2.327 Decl. +1.532
for a total 2.783 deg
ibex_rotate -o -u 0.99079,0.127538,0.045485 -w ibex-sun -t 2024/04:03:15:48:07
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.990790,+0.127538,+0.045485
which is R.A. +7.335 Decl. +2.607
missing R.A. +12.986 Decl. +5.576 (ibex-sun)
error is R.A. +5.651 Decl. +2.969
for a total 6.370 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 0.977459,0.19741,0.074857 -w ibex-sun -t 2024/04:03:17:31:15
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.977459,+0.197410,+0.074857
which is R.A. +11.418 Decl. +4.293
missing R.A. +13.052 Decl. +5.605 (ibex-sun)
error is R.A. +1.634 Decl. +1.312
for a total 2.091 deg
ibex_rotate -o -u 0.977459,0.19741,0.074857 -w ibex-sun -t 2024/04:03:19:06:21
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.977459,+0.197410,+0.074857
which is R.A. +11.418 Decl. +4.293
missing R.A. +13.113 Decl. +5.631 (ibex-sun)
error is R.A. +1.695 Decl. +1.338
for a total 2.154 deg
ibex_rotate -o -u 0.977459,0.19741,0.074857 -w ibex-sun -t 2024/04:08:03:26:40
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.977459,+0.197410,+0.074857
which is R.A. +11.418 Decl. +4.293
missing R.A. +17.040 Decl. +7.259 (ibex-sun)
error is R.A. +5.622 Decl. +2.966
for a total 6.330 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0644 apogee:
ibex_rotate -o -u 0.957926,0.266791,0.10583 -w ibex-sun -t 2024/04:08:05:44:23
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.957926,+0.266791,+0.105830
which is R.A. +15.563 Decl. +6.075
missing R.A. +17.123 Decl. +7.289 (ibex-sun)
error is R.A. +1.560 Decl. +1.214
for a total 1.968 deg
ibex_rotate -o -u 0.957926,0.266791,0.10583 -w ibex-sun -t 2024-04-13T06:16:59
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.957926,+0.266791,+0.105830
which is R.A. +15.563 Decl. +6.075
missing R.A. +21.788 Decl. +9.160 (ibex-sun)
error is R.A. +6.225 Decl. +3.085
for a total 6.898 deg
There is no overlap with orbit 0642 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492