Hi all,
I have looked at the orbit 0642 ATS file, IBEX_2024_081_o0642a_v001.scr and I approve.
The constraint violations in IBEX_2024_081_o0642a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2024_081_o0642a_v001.scr match those in the STF, IBEX_2024_081_o0642a_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_081_o0642a_v001.oef and as verified
with ibex_orbit.
There are 3 star tracker outages this orbit. Outage 1 begins at 2024-03-21 11:10:00 and lasts for 17.8 hours. Outage 2 begins at 2024-03-27 08:03:08 and lasts for 37.2 hours. Outage 3 begins at 2024-03-30
03:24:54 and lasts for 8.1 hours.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit642_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 maneuve.
The Inertial maneuver at perigee of orbit 0641 left us pointing in safe directions for the orbit 0642 arc A ascending and descending sequences:
ibex_rotate -o -u 0.99993,0.010454,-0.005515 -w ibex-sun -t 2024/03:21:22:34:23
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.999930,+0.010454,-0.005515
which is R.A. +0.599 Decl. -0.316
missing R.A. +1.331 Decl. +0.556 (ibex-sun)
error is R.A. +0.732 Decl. +0.871
for a total 1.138 deg
ibex_rotate -o -u 0.99993,0.010454,-0.005515 -w ibex-sun -t 2024/03:25:14:12:16
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.999930,+0.010454,-0.005515
which is R.A. +0.599 Decl. -0.316
missing R.A. +4.741 Decl. +2.065 (ibex-sun)
error is R.A. +4.142 Decl. +2.381
for a total 4.777 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 0.998372,0.055468,0.013316 -w ibex-sun -t 2024/03:25:15:55:24
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.998372,+0.055468,+0.013316
which is R.A. +3.180 Decl. +0.763
missing R.A. +4.807 Decl. +2.094 (ibex-sun)
error is R.A. +1.627 Decl. +1.331
for a total 2.101 deg
ibex_rotate -o -u 0.998372,0.055468,0.013316 -w ibex-sun -t 2024/03:25:17:30:30
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.998372,+0.055468,+0.013316
which is R.A. +3.180 Decl. +0.763
missing R.A. +4.867 Decl. +2.121 (ibex-sun)
error is R.A. +1.687 Decl. +1.358
for a total 2.165 deg
ibex_rotate -o -u 0.998372,0.055468,0.013316 -w ibex-sun -t 2024/03:30:02:42:47
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.998372,+0.055468,+0.013316
which is R.A. +3.180 Decl. +0.763
missing R.A. +8.790 Decl. +3.809 (ibex-sun)
error is R.A. +5.610 Decl. +3.046
for a total 6.378 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0643 apogee:
ibex_rotate -o -u 0.99079,0.127538,0.045485 -w ibex-sun -t 2024/03:30:12:17:33
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. +9.133 Decl. +3.936 (ibex-sun)
error is R.A. +1.798 Decl. +1.329
for a total 2.233 deg
ibex_rotate -o -u 0.99079,0.127538,0.045485 -w ibex-sun -t 2024-04-04T03:16:10
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. +13.426 Decl. +5.766 (ibex-sun)
error is R.A. +6.091 Decl. +3.159
for a total 6.847 deg
There is no overlap with orbit 0641 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492