Hi all,
The angle at descending after the apogee sun maneuver is 4.059 deg
I have looked at the orbit 0631 ATS file, IBEX_2023_345_o0631a_v001.scr and I approve.
The constraint violations in IBEX_2023_345_o0631a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.
The PL commands in IBEX_2023_345_o0631a_v001.scr match those in the STF, IBEX_2023_345_o0631a_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_345_o0631a_v001.oef and as verified
with ibex_orbit.
There is 1 star tracker outage this orbit. Outage begins at 2023-12-14 17:53:53 and lasts for 85.7 hours.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit631_Contacts.txt for all contacts (2).
No Battery Balancing this orbit.
The Inertial maneuver at perigee of orbit 0630 left us pointing in safe directions for the orbit 0631 arc A ascending and descending sequences:
ibex_rotate -o -u -0.17728,-0.898951,-0.400573 -w ibex-sun -t 2023/12:11:18:30:36
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.177280,-0.898951,-0.400573
which is R.A. +258.844 Decl. -23.614
missing R.A. +258.198 Decl. -23.013 (ibex-sun)
error is R.A. +0.646 Decl. +0.601
for a total 0.845 deg
ibex_rotate -o -u -0.17728,-0.898951,-0.400573 -w ibex-sun -t 2023/12:15:17:52:09
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.177280,-0.898951,-0.400573
which is R.A. +258.844 Decl. -23.614
missing R.A. +262.595 Decl. -23.243 (ibex-sun)
error is R.A. +3.751 Decl. +0.371
for a total 3.461 deg
The Sun 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 -r +262.676 -d -23.246 -w ibex-sun -t 2023/12:15:19:40:17
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.117131,-0.911322,-0.394680
which is R.A. +262.676 Decl. -23.246
missing R.A. +262.676 Decl. -23.246 (ibex-sun)
error is R.A. +0.000 Decl. +0.000
for a total 0.000 deg
ibex_rotate -o -r +262.676 -d -23.246 -w ibex-sun -t 2023/12:15:21:10:23
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.117131,-0.911322,-0.394680
which is R.A. +262.676 Decl. -23.246
missing R.A. +262.744 Decl. -23.249 (ibex-sun)
error is R.A. +0.068 Decl. +0.003
for a total 0.063 deg
ibex_rotate -o -r +262.676 -d -23.246 -w ibex-sun -t 2023/12:19:21:07:42
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.117131,-0.911322,-0.394680
which is R.A. +262.676 Decl. -23.246
missing R.A. +267.093 Decl. -23.392 (ibex-sun)
error is R.A. +4.417 Decl. +0.146
for a total 4.059 deg
The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0632 apogee:
ibex_rotate -o -u -0.01682,-0.913355,-0.406816 -w ibex-sun -t 2023/12:19:23:27:54
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.016820,-0.913355,-0.406816
which is R.A. +268.945 Decl. -24.005
missing R.A. +267.204 Decl. -23.397 (ibex-sun)
error is R.A. +1.741 Decl. +0.608
for a total 1.706 deg
ibex_rotate -o -u -0.01682,-0.913355,-0.406816 -w ibex-sun -t 2023-12-25T00:18:13
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.016820,-0.913355,-0.406816
which is R.A. +268.945 Decl. -24.005
missing R.A. +272.887 Decl. -23.390 (ibex-sun)
error is R.A. +3.942 Decl. +0.615
for a total 3.662 deg
There is no overlap with orbit 0630 commands.
Command Approval Checklist is attached.
Carol
--
Carol Weaver
University of New Hampshire
503-902-8492