IBEX_2017_144_o0368a_v002.scr,

and I approve.

The only constraint violations in

IBEX_2017_144_o0368a_v001.ccvr

are from the removal of the

ACT_SetSpinPulseProtectEnable Enable

commands (2); the violations are expected.

The PL commands in the v002 ATS match those in the v002 STF,

IBEX_2017_144_o0368a_v002.stf,

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

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_144_o0368a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage starts about 4 hours before perigee and runs for about 45 minutes.  No despinning should be required due to this outage.

There is one moon in Lo FOV session in arc B.  The ATS start time is 1 1/2 hours after that in the OEF and the ATS end time is about 2 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_Orbit368_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 367 left us pointing in safe directions for the orbit 368 arc A ascending and descending sequences:

ibex_rotate -o -u 0.478535,0.809384,0.340445 -w ibex-sun -t 2017/05:25:08:35:54

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.478535,+0.809384,+0.340445

 which is     R.A.  +59.407 Decl. +19.904

 missing      R.A.  +62.081 Decl. +20.940 (ibex-sun)

 error is     R.A.   +2.674 Decl.  +1.036

 for a total  2.712 deg

ibex_rotate -o -u 0.478535,0.809384,0.340445 -w ibex-sun -t 2017/05:28:22:12:02

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.478535,+0.809384,+0.340445

 which is     R.A.  +59.407 Decl. +19.904

 missing      R.A.  +65.805 Decl. +21.544 (ibex-sun)

 error is     R.A.   +6.398 Decl.  +1.640

 for a total  6.204 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 0.411438,0.840296,0.353018 -w ibex-sun -t 2017/05:28:23:55:10

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.411438,+0.840296,+0.353018

 which is     R.A.  +63.912 Decl. +20.672

 missing      R.A.  +65.879 Decl. +21.556 (ibex-sun)

 error is     R.A.   +1.967 Decl.  +0.884

 for a total  2.037 deg

ibex_rotate -o -u 0.411438,0.840296,0.353018 -w ibex-sun -t 2017/05:29:01:30:16

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.411438,+0.840296,+0.353018

 which is     R.A.  +63.912 Decl. +20.672

 missing      R.A.  +65.948 Decl. +21.568 (ibex-sun)

 error is     R.A.   +2.036 Decl.  +0.896

 for a total  2.100 deg

ibex_rotate -o -u 0.411438,0.840296,0.353018 -w ibex-sun -t 2017/06:02:10:30:28

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.411438,+0.840296,+0.353018

 which is     R.A.  +63.912 Decl. +20.672

 missing      R.A.  +70.360 Decl. +22.231 (ibex-sun)

 error is     R.A.   +6.448 Decl.  +1.559

 for a total  6.200 deg

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 369 apogee:

ibex_rotate -o -u 0.340091,0.866562,0.365251 -w ibex-sun -t 2017/06:02:12:43:35

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.340091,+0.866562,+0.365251

 which is     R.A.  +68.572 Decl. +21.423

 missing      R.A.  +70.448 Decl. +22.241 (ibex-sun)

 error is     R.A.   +1.876 Decl.  +0.818

 for a total  1.924 deg

ibex_rotate -o -u 0.340091,0.866562,0.365251 -w ibex-sun -t 2017-06-07T09:44:15.877Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.340091,+0.866562,+0.365251

 which is     R.A.  +68.572 Decl. +21.423

 missing      R.A.  +75.520 Decl. +22.745 (ibex-sun)

 error is     R.A.   +6.948 Decl.  +1.322

 for a total  6.572 deg

No Lo O-mode.

There is no overlap with orbit 367 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken