All,
I have looked at the orbit 443 ATS,
IBEX_2019_097_o0443a_v001.scr,
and I approve.
The only constraint violations in
IBEX_2019_097_o0443a_v001.ccvr
are from the removal of the
ACT_SetSpinPulseProtectEnable Enable
commands (2); the violations are expected.
The PL commands in the v001 ATS match those in the v002 STF,
IBEX_2019_097_o0443a_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_2019_097_o0443a_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_Orbit443_Contacts.txt,
for all contacts (4).
We are not doing battery cell balancing this orbit; we'll do it again in the next orbit.
The inertial maneuver at perigee of orbit 442 left us pointing in safe directions for the orbit 443 arc A ascending and descending sequences:
ibex_rotate -o -u 0.968203,0.232981,0.091119 -w ibex-sun -t 2019/04:07:12:32:24
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.968203,+0.232981,+0.091119
which is R.A. +13.530 Decl. +5.228
missing R.A. +15.792 Decl. +6.708 (ibex-sun)
error is R.A. +2.262 Decl. +1.480
for a total 2.693 deg
ibex_rotate -o -u 0.968203,0.232981,0.091119 -w ibex-sun -t 2019/04:11:07:46:48
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.968203,+0.232981,+0.091119
which is R.A. +13.530 Decl. +5.228
missing R.A. +19.397 Decl. +8.184 (ibex-sun)
error is R.A. +5.867 Decl. +2.957
for a total 6.534 deg
The inertial 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 0.945101,0.30373,0.120553 -w ibex-sun -t 2019/04:11:09:29:56
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.945101,+0.303730,+0.120553
which is R.A. +17.816 Decl. +6.924
missing R.A. +19.463 Decl. +8.212 (ibex-sun)
error is R.A. +1.647 Decl. +1.288
for a total 2.080 deg
ibex_rotate -o -u 0.945101,0.30373,0.120553 -w ibex-sun -t 2019/04:11:11:05:02
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.945101,+0.303730,+0.120553
which is R.A. +17.816 Decl. +6.924
missing R.A. +19.524 Decl. +8.238 (ibex-sun)
error is R.A. +1.708 Decl. +1.314
for a total 2.143 deg
ibex_rotate -o -u 0.945101,0.30373,0.120553 -w ibex-sun -t 2019/04:16:01:42:21
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.945101,+0.303730,+0.120553
which is R.A. +17.816 Decl. +6.924
missing R.A. +23.646 Decl. +9.884 (ibex-sun)
error is R.A. +5.830 Decl. +2.960
for a total 6.482 deg
The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 444 apogee:
ibex_rotate -o -u 0.915887,0.371828,0.151313 -w ibex-sun -t 2019/04:16:05:06:06
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.915887,+0.371828,+0.151313
which is R.A. +22.096 Decl. +8.703
missing R.A. +23.773 Decl. +9.926 (ibex-sun)
error is R.A. +1.677 Decl. +1.223
for a total 2.058 deg
ibex_rotate -o -u 0.915887,0.371828,0.151313 -w ibex-sun -t 2019-04-21T00:57:05.378Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.915887,+0.371828,+0.151313
which is R.A. +22.096 Decl. +8.703
missing R.A. +28.386 Decl. +11.645 (ibex-sun)
error is R.A. +6.290 Decl. +2.942
for a total 6.854 deg
No Lo O-mode.
There is no overlap with orbit 442 commands by manual inspection or by checking at
http://ibex.unh.edu/cgi-bin/ats.cgi.
Command Approval Checklist is attached.
Ken
On March 25, 2019 at 3:05 PM "Perry, Timothy" <Timothy.Perry@ngc.com> wrote:
All,
Attached are the planning files for Orbit #443.
Please respond to this thread with comments and approvals.
Approvals are required by COB 27 March 2019.
Please note the following:
1. No Battery Balancing this orbit
2. IBEX_2019_097_o0443_v001.ccvr
# Input files: 1
# IBEX_2019_097_o0443a_v001.scr
==========================
HARD CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==========================
SOFT CONSTRAINT VIOLATIONS
==========================
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2019/04/07 09:46:53 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2019/04/11 10:35:02 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.
Timothy E.Perry
CRS IBEX OCO-2
Mission Operations
tim.perry@orbitalatk.com
Office (703) 406-5976
Cell (301) 606-1430
![cid:image001.jpg@01D04F4E.6B1BECE0]()
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