IBEX_2017_263_o0381a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2017_263_o0381a_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_2017_263_o0381a_v002.stf.

Ascending and descending command sequences are consistent with each other and 15 Re ascending, the apogee maneuver time and 15 Re descending as determined from the OEF,

IBEX_2017_263_o0381a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage starts about 2 hours before 15 Re ascending and ends just after 15 Re ascending.  Despinning should not be required due to this outage.

There is one moon in Lo FOV session in arc B.  The ATS start time is one hour after that in the OEF and the ATS end time is about an hour 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_Orbit381_Contacts.txt,

for all contacts (4).

No battery cell balancing this orbit; we'll do it again in the next orbit.

The inertial maneuver at perigee of orbit 380 left us pointing in safe directions for the orbit 381 arc A ascending and descending sequences:

ibex_rotate -o -u -0.996542,0.07948,0.02424 -w ibex-sun -t 2017/09:21:03:39:27

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.996542,+0.079480,+0.024240

 which is     R.A. +175.440 Decl.  +1.389

 missing      R.A. +178.266 Decl.  +0.733 (ibex-sun)

 error is     R.A.   +2.826 Decl.  +0.656

 for a total  2.900 deg

ibex_rotate -o -u -0.996542,0.07948,0.02424 -w ibex-sun -t 2017/09:24:19:00:15

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.996542,+0.079480,+0.024240

 which is     R.A. +175.440 Decl.  +1.389

 missing      R.A. +181.434 Decl.  -0.649 (ibex-sun)

 error is     R.A.   +5.994 Decl.  +2.038

 for a total  6.331 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 -0.999935,0.008482,-0.007557 -w ibex-sun -t 2017/09:24:20:43:23

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.999935,+0.008482,-0.007557

 which is     R.A. +179.514 Decl.  -0.433

 missing      R.A. +181.499 Decl.  -0.676 (ibex-sun)

 error is     R.A.   +1.985 Decl.  +0.243

 for a total  2.000 deg

ibex_rotate -o -u -0.999935,0.008482,-0.007557 -w ibex-sun -t 2017/09:24:22:18:29

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.999935,+0.008482,-0.007557

 which is     R.A. +179.514 Decl.  -0.433

 missing      R.A. +181.559 Decl.  -0.701 (ibex-sun)

 error is     R.A.   +2.045 Decl.  +0.268

 for a total  2.062 deg

ibex_rotate -o -u -0.999935,0.008482,-0.007557 -w ibex-sun -t 2017/09:29:09:03:06

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.999935,+0.008482,-0.007557

 which is     R.A. +179.514 Decl.  -0.433

 missing      R.A. +185.695 Decl.  -2.438 (ibex-sun)

 error is     R.A.   +6.181 Decl.  +2.005

 for a total  6.496 deg

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 382 apogee:

ibex_rotate -o -u -0.997249,-0.06372,-0.037865 -w ibex-sun -t 2017/09:29:11:33:02

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.997249,-0.063720,-0.037865

 which is     R.A. +183.656 Decl.  -2.170

 missing      R.A. +185.792 Decl.  -2.483 (ibex-sun)

 error is     R.A.   +2.136 Decl.  +0.313

 for a total  2.157 deg

ibex_rotate -o -u -0.997249,-0.06372,-0.037865 -w ibex-sun -t 2017-10-04T09:27:13.960Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.997249,-0.063720,-0.037865

 which is     R.A. +183.656 Decl.  -2.170

 missing      R.A. +190.105 Decl.  -4.371 (ibex-sun)

 error is     R.A.   +6.449 Decl.  +2.201

 for a total  6.804 deg

No Lo O-mode.

There is no overlap with orbit 380 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken