Hi all,
I have looked at the orbit 0644 ATS file, IBEX_2024_099_o0644a_v001.scr and I approve.
The constraint violations in IBEX_2024_099_o0644a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2024_099_o0644a_v001.scr match those in the STF, IBEX_2024_099_o0644a_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_099_o0644a_v001.oef and as verified
with ibex_orbit.
There is 1 star tracker outage this orbit. Outage begins at 2024-04-17 12:57:18 and lasts for 7.6 hours.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit644_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 0643 left us pointing in safe directions for the orbit 0644 arc A ascending and descending sequences:
ibex_rotate -o -u 0.957926,0.266791,0.10583 -w ibex-sun -t 2024/04:09:03:06:00
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. +17.913 Decl. +7.573 (ibex-sun)
error is R.A. +2.350 Decl. +1.498
for a total 2.773 deg
ibex_rotate -o -u 0.957926,0.266791,0.10583 -w ibex-sun -t 2024/04:12:18:43:53
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. +21.339 Decl. +8.978 (ibex-sun)
error is R.A. +5.776 Decl. +2.903
for a total 6.420 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 0.93263,0.334848,0.134453 -w ibex-sun -t 2024/04:12:20:27:01
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.932630,+0.334848,+0.134453
which is R.A. +19.750 Decl. +7.727
missing R.A. +21.406 Decl. +9.005 (ibex-sun)
error is R.A. +1.656 Decl. +1.278
for a total 2.078 deg
ibex_rotate -o -u 0.93263,0.334848,0.134453 -w ibex-sun -t 2024/04:12:22:02:07
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.932630,+0.334848,+0.134453
which is R.A. +19.750 Decl. +7.727
missing R.A. +21.468 Decl. +9.030 (ibex-sun)
error is R.A. +1.718 Decl. +1.303
for a total 2.142 deg
ibex_rotate -o -u 0.93263,0.334848,0.134453 -w ibex-sun -t 2024/04:17:08:56:53
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.932630,+0.334848,+0.134453
which is R.A. +19.750 Decl. +7.727
missing R.A. +25.555 Decl. +10.611 (ibex-sun)
error is R.A. +5.805 Decl. +2.884
for a total 6.415 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0645 apogee:
ibex_rotate -o -u 0.900853,0.401802,0.164376 -w ibex-sun -t 2024/04:17:11:12:39
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.900853,+0.401802,+0.164376
which is R.A. +24.038 Decl. +9.461
missing R.A. +25.638 Decl. +10.639 (ibex-sun)
error is R.A. +1.600 Decl. +1.178
for a total 1.967 deg
ibex_rotate -o -u 0.900853,0.401802,0.164376 -w ibex-sun -t 2024-04-22T10:22:23
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.900853,+0.401802,+0.164376
which is R.A. +24.038 Decl. +9.461
missing R.A. +30.297 Decl. +12.355 (ibex-sun)
error is R.A. +6.259 Decl. +2.894
for a total 6.792 deg
There is no overlap with orbit 0643 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492