IBEX_2017_364_o0392a_v003.scr,

IBEX_2017_364_o0392a_v002.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 v002 STF,

IBEX_2017_363_o0392a_v002.stf,

except the ATS has an SSR_DUMP_NEW command.  This is expected as APL is being used for the dump pass.

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_2017_364_o0392a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage starts about 2 1/2 days before apogee and runs for 4+ days.  Some despinning may be required due to this outage.

There are no moon in Lo FOV sessions.

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

IBEX_Orbit392_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 391 left us pointing in safe directions for the orbit 392 arc A ascending and descending sequences:

ibex_rotate -o -u 0.163042,-0.901094,-0.401804 -w ibex-sun -t 2017/12:30:11:51:21

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.163042,-0.901094,-0.401804

 which is     R.A. +280.256 Decl. -23.691

 missing      R.A. +279.539 Decl. -23.171 (ibex-sun)

 error is     R.A.   +0.717 Decl.  +0.520

 for a total  0.839 deg

ibex_rotate -o -u 0.163042,-0.901094,-0.401804 -w ibex-sun -t 2018/01:03:12:10:02

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.163042,-0.901094,-0.401804

 which is     R.A. +280.256 Decl. -23.691

 missing      R.A. +283.914 Decl. -22.840 (ibex-sun)

 error is     R.A.   +3.658 Decl.  +0.851

 for a total  3.467 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 +283.995 -d -22.831 -w ibex-sun -t 2018/01:03:13:58:10

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.222890,-0.894296,-0.388014

 which is     R.A. +283.995 Decl. -22.831

 missing      R.A. +283.995 Decl. -22.831 (ibex-sun)

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

 for a total  0.001 deg

ibex_rotate -o -r +283.995 -d -22.831 -w ibex-sun -t 2018/01:03:15:28:16

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.222890,-0.894296,-0.388014

 which is     R.A. +283.995 Decl. -22.831

 missing      R.A. +284.063 Decl. -22.824 (ibex-sun)

 error is     R.A.   +0.068 Decl.  +0.007

 for a total  0.063 deg

ibex_rotate -o -r +283.995 -d -22.831 -w ibex-sun -t 2018/01:07:15:35:49

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.222890,-0.894296,-0.388014

 which is     R.A. +283.995 Decl. -22.831

 missing      R.A. +288.436 Decl. -22.330 (ibex-sun)

 error is     R.A.   +4.441 Decl.  +0.501

 for a total  4.131 deg

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 393 apogee:

ibex_rotate -o -u 0.247885,-0.885021,-0.39407 -w ibex-sun -t 2018/01:07:17:52:16

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. +288.545 Decl. -22.319 (ibex-sun)

 error is     R.A.   +2.898 Decl.  +0.889

 for a total  2.816 deg

ibex_rotate -o -u 0.247885,-0.885021,-0.39407 -w ibex-sun -t 2018-01-12T15:26:57.106Z

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. +293.909 Decl. -21.636 (ibex-sun)

 error is     R.A.   +8.262 Decl.  +1.572

 for a total  7.796 deg

No Lo O-mode.

There is no overlap with orbit 391 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken