Hi all,
I have looked at the orbit 0621 ATS file, IBEX_2023_255_o0621a_v001.scr and I approve.
The constraint violations in IBEX_2023_255_o0621a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2023_255_o0621a_v001.scr match those in the STF, IBEX_2023_255_o0621a_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_255_o0621a_v001.oef and as verified
with ibex_orbit.
No 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_Orbit621_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 0620 left us pointing in safe directions for the orbit 0621 arc A ascending and descending sequences:
ibex_rotate -o -u -0.971868,0.219519,0.085347 -w ibex-sun -t 2023/09:12:14:31:56
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.971868,+0.219519,+0.085347
which is R.A. +167.272 Decl. +4.896
missing R.A. +170.134 Decl. +4.227 (ibex-sun)
error is R.A. +2.862 Decl. +0.669
for a total 2.930 deg
ibex_rotate -o -u -0.971868,0.219519,0.085347 -w ibex-sun -t 2023/09:16:03:08:13
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.971868,+0.219519,+0.085347
which is R.A. +167.272 Decl. +4.896
missing R.A. +173.200 Decl. +2.948 (ibex-sun)
error is R.A. +5.928 Decl. +1.948
for a total 6.227 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 -0.987011,0.151052,0.054706 -w ibex-sun -t 2023/09:16:04:51:21
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.987011,+0.151052,+0.054706
which is R.A. +171.299 Decl. +3.136
missing R.A. +173.264 Decl. +2.922 (ibex-sun)
error is R.A. +1.965 Decl. +0.214
for a total 1.974 deg
ibex_rotate -o -u -0.987011,0.151052,0.054706 -w ibex-sun -t 2023/09:16:06:26:27
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.987011,+0.151052,+0.054706
which is R.A. +171.299 Decl. +3.136
missing R.A. +173.323 Decl. +2.897 (ibex-sun)
error is R.A. +2.024 Decl. +0.238
for a total 2.036 deg
ibex_rotate -o -u -0.987011,0.151052,0.054706 -w ibex-sun -t 2023/09:20:13:32:00
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.987011,+0.151052,+0.054706
which is R.A. +171.299 Decl. +3.136
missing R.A. +177.267 Decl. +1.203 (ibex-sun)
error is R.A. +5.968 Decl. +1.933
for a total 6.269 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0622 apogee:
ibex_rotate -o -u -0.996242,0.082624,0.025985 -w ibex-sun -t 2023/09:20:15:59:10
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.996242,+0.082624,+0.025985
which is R.A. +175.259 Decl. +1.489
missing R.A. +177.364 Decl. +1.157 (ibex-sun)
error is R.A. +2.105 Decl. +0.332
for a total 2.130 deg
ibex_rotate -o -u -0.996242,0.082624,0.025985 -w ibex-sun -t 2023-09-25T11:42:53
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.996242,+0.082624,+0.025985
which is R.A. +175.259 Decl. +1.489
missing R.A. +181.601 Decl. -0.678 (ibex-sun)
error is R.A. +6.342 Decl. +2.167
for a total 6.701 deg
There is no overlap with orbit 0620 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492