Hi all,
I have looked at the orbit 0660 ATS file, IBEX_2024_244_o0660a_v002.scr and I approve.
The constraint violations in IBEX_2024_244_o0660a_v002.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2024_244_o0660a_v002.scr match those in the STF, IBEX_2024_244_o0660a_v004.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_244_o0660a_v002.oef
and as verified with ibex_orbit.
There is 1 star tracker outage this orbit. Outage begins at 2024-08-31 11:54:32 and lasts for 11.4 hours.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit660_Contacts.txt for all contacts (2).
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 0659 left us pointing in safe directions for the orbit 0660 arc A ascending and descending sequences:
ibex_rotate -o -u -0.908941,0.38601,0.157555 -w ibex-sun -t 2024/08:31:12:07:53
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.908941,+0.386010,+0.157555
which is R.A. +156.990 Decl. +9.065
missing R.A. +159.885 Decl. +8.460 (ibex-sun)
error is R.A. +2.895 Decl. +0.605
for a total 2.925 deg
ibex_rotate -o -u -0.908941,0.38601,0.157555 -w ibex-sun -t 2024/09:04:02:30:56
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.908941,+0.386010,+0.157555
which is R.A. +156.990 Decl. +9.065
missing R.A. +163.050 Decl. +7.221 (ibex-sun)
error is R.A. +6.060 Decl. +1.844
for a total 6.276 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 -0.938467,0.320614,0.128398 -w ibex-sun -t 2024/09:04:04:14:04
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.938467,+0.320614,+0.128398
which is R.A. +161.138 Decl. +7.377
missing R.A. +163.115 Decl. +7.196 (ibex-sun)
error is R.A. +1.977 Decl. +0.181
for a total 1.969 deg
ibex_rotate -o -u -0.938467,0.320614,0.128398 -w ibex-sun -t 2024/09:04:05:49:10
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.938467,+0.320614,+0.128398
which is R.A. +161.138 Decl. +7.377
missing R.A. +163.174 Decl. +7.172 (ibex-sun)
error is R.A. +2.036 Decl. +0.205
for a total 2.030 deg
ibex_rotate -o -u -0.938467,0.320614,0.128398 -w ibex-sun -t 2024/09:08:15:22:59
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.938467,+0.320614,+0.128398
which is R.A. +161.138 Decl. +7.377
missing R.A. +167.234 Decl. +5.489 (ibex-sun)
error is R.A. +6.096 Decl. +1.888
for a total 6.344 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0661 apogee:
ibex_rotate -o -u -0.962119,0.253574,0.100136 -w ibex-sun -t 2024/09:08:17:32:00
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.962119,+0.253574,+0.100136
which is R.A. +165.235 Decl. +5.747
missing R.A. +167.319 Decl. +5.450 (ibex-sun)
error is R.A. +2.084 Decl. +0.297
for a total 2.095 deg
ibex_rotate -o -u -0.962119,0.253574,0.100136 -w ibex-sun -t 2024-09-13T17:06:08
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.962119,+0.253574,+0.100136
which is R.A. +165.235 Decl. +5.747
missing R.A. +171.698 Decl. +3.606 (ibex-sun)
error is R.A. +6.463 Decl. +2.141
for a total 6.787 deg
There is no overlap with orbit 0659 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492