IBEX_2017_181_o0372a_v003.scr,

and I approve.

The only constraint violations in

IBEX_2017_181_o0372a_v003.ccvr

are from the removal of the

ACT_SetSpinPulseProtectEnable Enable

commands (2); the violations are expected.

The PL commands in the v003 ATS match those in the v003 STF,

IBEX_2017_180_o0372a_v003.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_181_o0372a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage starts 4 hours before 15 Re descending and runs for 1+ days.  Some despinning may be required due to this outage.

There are two moon in Lo FOV sessions in the OEF but only one in the ATS.  The ISOC timing for the first session puts it before we ascend.  The second session starts in arc A (OEF) (ATS - after apogee maneuver) and ends in arc B.  The ATS start time is 16 hours after that in the OEF and the ATS end time is 3 1/2+ 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_Orbit372_Contacts.txt,

for all contacts (4).  The last contact ends after orbit 373 14 Re ascending.

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

The inertial maneuver at perigee of orbit 371 left us pointing in safe directions for the orbit 372 arc A ascending and descending sequences:

ibex_rotate -o -u -0.103638,0.916298,0.386856 -w ibex-sun -t 2017/06:30:11:46:29

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.103638,+0.916298,+0.386856

 which is     R.A.  +96.453 Decl. +22.759

 missing      R.A.  +99.371 Decl. +23.137 (ibex-sun)

 error is     R.A.   +2.918 Decl.  +0.378

 for a total  2.714 deg

ibex_rotate -o -u -0.103638,0.916298,0.386856 -w ibex-sun -t 2017/07:04:00:44:42

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.103638,+0.916298,+0.386856

 which is     R.A.  +96.453 Decl. +22.759

 missing      R.A. +103.075 Decl. +22.864 (ibex-sun)

 error is     R.A.   +6.622 Decl.  +0.105

 for a total  6.104 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 -0.176575,0.907134,0.382006 -w ibex-sun -t 2017/07:04:02:27:50

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.176575,+0.907134,+0.382006

 which is     R.A. +101.015 Decl. +22.458

 missing      R.A. +103.150 Decl. +22.859 (ibex-sun)

 error is     R.A.   +2.135 Decl.  +0.401

 for a total  2.011 deg

ibex_rotate -o -u -0.176575,0.907134,0.382006 -w ibex-sun -t 2017/07:04:04:02:56

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.176575,+0.907134,+0.382006

 which is     R.A. +101.015 Decl. +22.458

 missing      R.A. +103.220 Decl. +22.854 (ibex-sun)

 error is     R.A.   +2.205 Decl.  +0.396

 for a total  2.073 deg

ibex_rotate -o -u -0.176575,0.907134,0.382006 -w ibex-sun -t 2017/07:08:12:24:49

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.176575,+0.907134,+0.382006

 which is     R.A. +101.015 Decl. +22.458

 missing      R.A. +107.709 Decl. +22.461 (ibex-sun)

 error is     R.A.   +6.694 Decl.  +0.003

 for a total  6.186 deg

The sun precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 373 apogee:

ibex_rotate -o -r +107.801 -d +22.449 -w ibex-sun -t 2017/07:08:14:41:14

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.282545,+0.879972,+0.381861

 which is     R.A. +107.801 Decl. +22.449

 missing      R.A. +107.801 Decl. +22.449 (ibex-sun)

 error is     R.A.   +0.000 Decl.  +0.000

 for a total  0.000 deg

ibex_rotate -o -r +107.801 -d +22.449 -w ibex-sun -t 2017-07-13T12:46:51.451Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.282545,+0.879972,+0.381861

 which is     R.A. +107.801 Decl. +22.449

 missing      R.A. +112.786 Decl. +21.763 (ibex-sun)

 error is     R.A.   +4.985 Decl.  +0.686

 for a total  4.669 deg

No Lo O-mode.

There is no overlap with orbit 371 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken