Hi all,
I have looked at the orbit 0618 ATS file, IBEX_2023_228_o0618a_v001.scr and I approve.
The constraint violations in IBEX_2023_228_o0618a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2023_228_o0618a_v001.scr match those in the STF, IBEX_2023_228_o0618a_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_228_o0618a_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_Orbit618_Contacts.txt for all contacts (4).
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 0617 left us pointing in safe directions for the orbit 0618 arc A ascending and descending sequences:
ibex_rotate -o -u -0.770887,0.58794,0.24507 -w ibex-sun -t 2023/08:16:16:23:12
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.770887,+0.587940,+0.245070
which is R.A. +142.668 Decl. +14.186
missing R.A. +145.569 Decl. +13.752 (ibex-sun)
error is R.A. +2.901 Decl. +0.434
for a total 2.848 deg
ibex_rotate -o -u -0.770887,0.58794,0.24507 -w ibex-sun -t 2023/08:20:05:47:09
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.770887,+0.587940,+0.245070
which is R.A. +142.668 Decl. +14.186
missing R.A. +148.783 Decl. +12.673 (ibex-sun)
error is R.A. +6.115 Decl. +1.513
for a total 6.137 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 -0.81653,0.533529,0.22051 -w ibex-sun -t 2023/08:20:07:30:17
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.816530,+0.533529,+0.220510
which is R.A. +146.839 Decl. +12.739
missing R.A. +148.850 Decl. +12.651 (ibex-sun)
error is R.A. +2.011 Decl. +0.088
for a total 1.964 deg
ibex_rotate -o -u -0.81653,0.533529,0.22051 -w ibex-sun -t 2023/08:20:09:05:23
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.816530,+0.533529,+0.220510
which is R.A. +146.839 Decl. +12.739
missing R.A. +148.912 Decl. +12.630 (ibex-sun)
error is R.A. +2.073 Decl. +0.109
for a total 2.025 deg
ibex_rotate -o -u -0.81653,0.533529,0.22051 -w ibex-sun -t 2023/08:24:17:12:26
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.816530,+0.533529,+0.220510
which is R.A. +146.839 Decl. +12.739
missing R.A. +153.037 Decl. +11.137 (ibex-sun)
error is R.A. +6.198 Decl. +1.602
for a total 6.271 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0619 apogee:
ibex_rotate -o -u -0.857524,0.47551,0.196323 -w ibex-sun -t 2023/08:24:19:50:31
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.857524,+0.475510,+0.196323
which is R.A. +150.991 Decl. +11.322
missing R.A. +153.141 Decl. +11.094 (ibex-sun)
error is R.A. +2.150 Decl. +0.228
for a total 2.121 deg
ibex_rotate -o -u -0.857524,0.47551,0.196323 -w ibex-sun -t 2023-08-29T15:13:56
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.857524,+0.475510,+0.196323
which is R.A. +150.991 Decl. +11.322
missing R.A. +157.415 Decl. +9.469 (ibex-sun)
error is R.A. +6.424 Decl. +1.853
for a total 6.585 deg
There is no overlap with orbit 0617 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492