IBEX_2018_035_o0396a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2018_035_o0396a_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_2018_035_o0396a_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_2018_035_o0396a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage starts 7+ hours after apogee and runs for almost 3 days.  Some despinning may be required due to this outage.

There is one moon in Lo FOV session in arc B.  The ATS start time is about 3 hours before that in the OEF and the ATS end time is about 6 hours before that in the OEF.  These differences are not unusual.

The ground station command sequences are correct and the timing and bit rates match those in the contacts file,

IBEX_Orbit396_Contacts.txt,

for all contacts (3).

We are doing battery cell balancing this orbit and the balancing commands are correct and offset by enough time from other commands.

The inertial maneuver at perigee of orbit 395 left us pointing in safe directions for the orbit 396 arc A ascending and descending sequences:

ibex_rotate -o -u 0.667031,-0.679725,-0.305031 -w ibex-sun -t 2018/02:04:14:30:55

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.667031,-0.679725,-0.305031

 which is     R.A. +314.460 Decl. -17.760

 missing      R.A. +317.970 Decl. -16.210 (ibex-sun)

 error is     R.A.   +3.510 Decl.  +1.550

 for a total  3.697 deg

ibex_rotate -o -u 0.667031,-0.679725,-0.305031 -w ibex-sun -t 2018/02:07:20:48:21

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.667031,-0.679725,-0.305031

 which is     R.A. +314.460 Decl. -17.760

 missing      R.A. +321.277 Decl. -15.198 (ibex-sun)

 error is     R.A.   +6.817 Decl.  +2.562

 for a total  7.020 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 0.773007,-0.578178,-0.261094 -w ibex-sun -t 2018/02:07:22:31:29

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.773007,-0.578178,-0.261094

 which is     R.A. +323.205 Decl. -15.135

 missing      R.A. +321.347 Decl. -15.175 (ibex-sun)

 error is     R.A.   +1.858 Decl.  +0.040

 for a total  1.794 deg

ibex_rotate -o -u 0.773007,-0.578178,-0.261094 -w ibex-sun -t 2018/02:08:00:06:35

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.773007,-0.578178,-0.261094

 which is     R.A. +323.205 Decl. -15.135

 missing      R.A. +321.412 Decl. -15.153 (ibex-sun)

 error is     R.A.   +1.793 Decl.  +0.018

 for a total  1.731 deg

ibex_rotate -o -u 0.773007,-0.578178,-0.261094 -w ibex-sun -t 2018/02:12:12:06:43

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.773007,-0.578178,-0.261094

 which is     R.A. +323.205 Decl. -15.135

 missing      R.A. +325.769 Decl. -13.678 (ibex-sun)

 error is     R.A.   +2.564 Decl.  +1.457

 for a total  2.879 deg

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 397 apogee:

ibex_rotate -o -u 0.775715,-0.575173,-0.259696 -w ibex-sun -t 2018/02:12:14:16:56

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.775715,-0.575173,-0.259696

 which is     R.A. +323.444 Decl. -15.052

 missing      R.A. +325.859 Decl. -13.650 (ibex-sun)

 error is     R.A.   +2.415 Decl.  +1.402

 for a total  2.727 deg

ibex_rotate -o -u 0.775715,-0.575173,-0.259696 -w ibex-sun -t 2018-02-17T10:06:55.182Z

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.775715,-0.575173,-0.259696

 which is     R.A. +323.444 Decl. -15.052

 missing      R.A. +330.668 Decl. -12.004 (ibex-sun)

 error is     R.A.   +7.224 Decl.  +3.048

 for a total  7.656 deg

No Lo O-mode.

There is no overlap with orbit 395 commands by manual inspection or by checking at

http://ibex.unh.edu/cgi-bin/ats.cgi.

Command Approval Checklist is attached.

Ken