Hi all,
I have looked at the orbit 0620 ATS file, IBEX_2023_246_o0620a_v001.scr and I approve.
The constraint violations in IBEX_2023_246_o0620a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2023_246_o0620a_v001.scr match those in the STF, IBEX_2023_246_o0620a_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_246_o0620a_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_Orbit620_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 0619 left us pointing in safe directions for the orbit 0620 arc A ascending and descending sequences:
ibex_rotate -o -u -0.924578,0.353044,0.143234 -w ibex-sun -t 2023/09:03:13:02:20
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.924578,+0.353044,+0.143234
which is R.A. +159.101 Decl. +8.235
missing R.A. +161.970 Decl. +7.621 (ibex-sun)
error is R.A. +2.869 Decl. +0.614
for a total 2.907 deg
ibex_rotate -o -u -0.924578,0.353044,0.143234 -w ibex-sun -t 2023/09:07:03:02:07
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.924578,+0.353044,+0.143234
which is R.A. +159.101 Decl. +8.235
missing R.A. +165.104 Decl. +6.369 (ibex-sun)
error is R.A. +6.003 Decl. +1.866
for a total 6.240 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 -0.951089,0.287223,0.113723 -w ibex-sun -t 2023/09:07:04:45:15
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.951089,+0.287223,+0.113723
which is R.A. +163.196 Decl. +6.530
missing R.A. +165.169 Decl. +6.343 (ibex-sun)
error is R.A. +1.973 Decl. +0.186
for a total 1.969 deg
ibex_rotate -o -u -0.951089,0.287223,0.113723 -w ibex-sun -t 2023/09:07:06:20:21
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.951089,+0.287223,+0.113723
which is R.A. +163.196 Decl. +6.530
missing R.A. +165.228 Decl. +6.320 (ibex-sun)
error is R.A. +2.032 Decl. +0.210
for a total 2.030 deg
ibex_rotate -o -u -0.951089,0.287223,0.113723 -w ibex-sun -t 2023/09:11:16:00:48
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.951089,+0.287223,+0.113723
which is R.A. +163.196 Decl. +6.530
missing R.A. +169.294 Decl. +4.622 (ibex-sun)
error is R.A. +6.098 Decl. +1.908
for a total 6.362 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0621 apogee:
ibex_rotate -o -u -0.971868,0.219519,0.085347 -w ibex-sun -t 2023/09:11:18:38:43
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. +169.397 Decl. +4.574 (ibex-sun)
error is R.A. +2.125 Decl. +0.322
for a total 2.142 deg
ibex_rotate -o -u -0.971868,0.219519,0.085347 -w ibex-sun -t 2023-09-16T14:41:19
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. +173.631 Decl. +2.770 (ibex-sun)
error is R.A. +6.359 Decl. +2.126
for a total 6.691 deg
There is no overlap with orbit 0619 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492