IBEX_2020_105_o0484a_v001.oef,
and as verified with ibex_orbit.
There are no star tracker outages.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file,
IBEX_Orbit484_Contacts.txt,
for all contacts (4).
We're not doing battery cell balancing this orbit; we'll do it again in the next orbit.
The inertial maneuver at perigee of orbit 483 left us pointing in safe directions for the orbit 484 arc A ascending and descending sequences:
ibex_rotate -o -u 0.926693,0.348302,0.14116 -w ibex-sun -t 2020/04:14:12:50:59
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.926693,+0.348302,+0.141160
which is R.A. +20.599 Decl. +8.115
missing R.A. +22.920 Decl. +9.560 (ibex-sun)
error is R.A. +2.321 Decl. +1.445
for a total 2.711 deg
ibex_rotate -o -u 0.926693,0.348302,0.14116 -w ibex-sun -t 2020/04:18:00:53:54
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.926693,+0.348302,+0.141160
which is R.A. +20.599 Decl. +8.115
missing R.A. +26.272 Decl. +10.862 (ibex-sun)
error is R.A. +5.673 Decl. +2.747
for a total 6.232 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 0.896019,0.41129,0.167302 -w ibex-sun -t 2020/04:18:02:37:02
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.896019,+0.411290,+0.167302
which is R.A. +24.656 Decl. +9.631
missing R.A. +26.338 Decl. +10.888 (ibex-sun)
error is R.A. +1.682 Decl. +1.257
for a total 2.079 deg
ibex_rotate -o -u 0.896019,0.41129,0.167302 -w ibex-sun -t 2020/04:18:04:12:08
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.896019,+0.411290,+0.167302
which is R.A. +24.656 Decl. +9.631
missing R.A. +26.400 Decl. +10.912 (ibex-sun)
error is R.A. +1.744 Decl. +1.281
for a total 2.142 deg
ibex_rotate -o -u 0.896019,0.41129,0.167302 -w ibex-sun -t 2020/04:22:12:01:47
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.896019,+0.411290,+0.167302
which is R.A. +24.656 Decl. +9.631
missing R.A. +30.336 Decl. +12.369 (ibex-sun)
error is R.A. +5.680 Decl. +2.738
for a total 6.210 deg
The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 485 apogee:
ibex_rotate -o -u 0.859739,0.472118,0.194816 -w ibex-sun -t 2020/04:22:15:11:08
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.859739,+0.472118,+0.194816
which is R.A. +28.773 Decl. +11.234
missing R.A. +30.453 Decl. +12.405 (ibex-sun)
error is R.A. +1.680 Decl. +1.171
for a total 2.019 deg
ibex_rotate -o -u 0.859739,0.472118,0.194816 -w ibex-sun -t 2020-04-27T10:21:46.221Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.859739,+0.472118,+0.194816
which is R.A. +28.773 Decl. +11.234
missing R.A. +35.085 Decl. +14.000 (ibex-sun)
error is R.A. +6.312 Decl. +2.766
for a total 6.751 deg
No Lo O-mode.
There is no overlap with orbit 483 commands by manual inspection or by checking at
Command Approval Checklist is attached.
Ken
