Hi all,
I have looked at the orbit 0653 ATS file, IBEX_2024_180_o0653a_v001.scr and I approve.
The constraint violations in IBEX_2024_180_o0653a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands and from two contacts being close together. The violations
are acceptable.
The PL commands in IBEX_2024_180_o0653a_v001.scr match those in the STF, IBEX_2024_180_o0653a_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_180_o0653a_v001.oef
and as verified with ibex_orbit.
There is 1 star tracker outage this orbit. Outage begins at 2024-07-07 19:05:53 and lasts for 3.9 hours.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit653_Contacts.txt for all contacts (4), except 1. There is a contact
that was previously scheduled for 40K and is listed with that bitrate in the contact file. The command in the ATS is correct with the 2K rate. This is acceptable.
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 0652 left us pointing in safe directions for the orbit 0653 arc A ascending and descending sequences:
ibex_rotate -o -u -0.083706,0.917824,0.388063 -w ibex-sun -t 2024/06:29:03:56:09
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.083706,+0.917824,+0.388063
which is R.A. +95.211 Decl. +22.834
missing R.A. +98.214 Decl. +23.204 (ibex-sun)
error is R.A. +3.003 Decl. +0.370
for a total 2.788 deg
ibex_rotate -o -u -0.083706,0.917824,0.388063 -w ibex-sun -t 2024/07:02:17:07:08
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.083706,+0.917824,+0.388063
which is R.A. +95.211 Decl. +22.834
missing R.A. +101.834 Decl. +23.008 (ibex-sun)
error is R.A. +6.623 Decl. +0.174
for a total 6.102 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 -0.157362,0.909891,0.383844 -w ibex-sun -t 2024/07:02:18:50:16
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.157362,+0.909891,+0.383844
which is R.A. +99.812 Decl. +22.572
missing R.A. +101.909 Decl. +23.004 (ibex-sun)
error is R.A. +2.097 Decl. +0.432
for a total 1.981 deg
ibex_rotate -o -u -0.157362,0.909891,0.383844 -w ibex-sun -t 2024/07:02:20:25:22
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.157362,+0.909891,+0.383844
which is R.A. +99.812 Decl. +22.572
missing R.A. +101.978 Decl. +22.999 (ibex-sun)
error is R.A. +2.166 Decl. +0.427
for a total 2.042 deg
ibex_rotate -o -u -0.157362,0.909891,0.383844 -w ibex-sun -t 2024/07:07:05:33:30
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.157362,+0.909891,+0.383844
which is R.A. +99.812 Decl. +22.572
missing R.A. +106.600 Decl. +22.577 (ibex-sun)
error is R.A. +6.788 Decl. +0.005
for a total 6.268 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0654 apogee:
ibex_rotate -o -u -0.232352,0.895921,0.3786 -w ibex-sun -t 2024/07:07:07:44:26
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.232352,+0.895921,+0.378600
which is R.A. +104.539 Decl. +22.247
missing R.A. +106.694 Decl. +22.564 (ibex-sun)
error is R.A. +2.155 Decl. +0.317
for a total 2.018 deg
ibex_rotate -o -u -0.232352,0.895921,0.3786 -w ibex-sun -t 2024-07-12T04:06:32
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.232352,+0.895921,+0.378600
which is R.A. +104.539 Decl. +22.247
missing R.A. +111.530 Decl. +21.984 (ibex-sun)
error is R.A. +6.991 Decl. +0.262
for a total 6.482 deg
There is no overlap with orbit 0652 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492