IBEX_2018_008_o0393a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2018_008_o0393a_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_008_o0393a_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_008_o0393a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage starts 2- days before apogee and runs 4+ days.  Some despinning may be required due to this outage.

There are two moon in Lo FOV sessions.  The first one is in arc A.  The ATS start time is about the same as the OEF start time and the ATS end time is about 15 hours before that in the OEF.  The second session starts in arc A and ends in arc B.  The ATS start time is almost one day later than that in the OEF and the ATS end time is about 7 hours earlier than 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_Orbit393_Contacts.txt,

for all contacts (3).

There is an eclipse near perigee.  The LE flag commands are correct, agree with Ryan's timing recommendations and are offset by enough time from other commands.

The inertial maneuver at perigee of orbit 392 left us pointing in safe directions for the orbit 393 arc A ascending and descending sequences:

ibex_rotate -o -u 0.247885,-0.885021,-0.39407 -w ibex-sun -t 2018/01:08:15:23:14

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.247885,-0.885021,-0.394070

 which is     R.A. +285.647 Decl. -23.208

 missing      R.A. +289.592 Decl. -22.239 (ibex-sun)

 error is     R.A.   +3.945 Decl.  +0.969

 for a total  3.765 deg

ibex_rotate -o -u 0.247885,-0.885021,-0.39407 -w ibex-sun -t 2018/01:12:13:53:48

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.247885,-0.885021,-0.394070

 which is     R.A. +285.647 Decl. -23.208

 missing      R.A. +293.840 Decl. -21.647 (ibex-sun)

 error is     R.A.   +8.193 Decl.  +1.561

 for a total  7.731 deg

The sun 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 -r +293.920 -d -21.634 -w ibex-sun -t 2018/01:12:15:41:56

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.376899,-0.849720,-0.368676

 which is     R.A. +293.920 Decl. -21.634

 missing      R.A. +293.920 Decl. -21.634 (ibex-sun)

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

 for a total  0.000 deg

ibex_rotate -o -r +293.920 -d -21.634 -w ibex-sun -t 2018/01:12:17:12:02

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.376899,-0.849720,-0.368676

 which is     R.A. +293.920 Decl. -21.634

 missing      R.A. +293.987 Decl. -21.623 (ibex-sun)

 error is     R.A.   +0.067 Decl.  +0.011

 for a total  0.063 deg

ibex_rotate -o -r +293.920 -d -21.634 -w ibex-sun -t 2018/01:16:14:49:38

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.376899,-0.849720,-0.368676

 which is     R.A. +293.920 Decl. -21.634

 missing      R.A. +298.145 Decl. -20.893 (ibex-sun)

 error is     R.A.   +4.225 Decl.  +0.741

 for a total  4.007 deg

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 394 apogee:

ibex_rotate -o -u 0.398892,-0.837498,-0.373474 -w ibex-sun -t 2018/01:16:16:57:49

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.398892,-0.837498,-0.373474

 which is     R.A. +295.468 Decl. -21.930

 missing      R.A. +298.244 Decl. -20.878 (ibex-sun)

 error is     R.A.   +2.776 Decl.  +1.052

 for a total  2.791 deg

ibex_rotate -o -u 0.398892,-0.837498,-0.373474 -w ibex-sun -t 2018-01-21T13:25:24.399Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.398892,-0.837498,-0.373474

 which is     R.A. +295.468 Decl. -21.930

 missing      R.A. +303.462 Decl. -19.899 (ibex-sun)

 error is     R.A.   +7.994 Decl.  +2.031

 for a total  7.737 deg

No Lo O-mode.

There is no overlap with orbit 392 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken