IBEX_2017_346_o0390a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2017_346_o0390a_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_346_o0390a_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_346_o0390a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage starts about 2 days after 15 Re ascending and runs for 1+ 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_Orbit390_Contacts.txt,

for all contacts (3).

We are not doing battery cell balancing this orbit; we'll do it again in the next orbit.

The inertial maneuver at perigee of orbit 389 left us pointing in safe directions for the orbit 390 arc A ascending and descending sequences:

ibex_rotate -o -u -0.155422,-0.90224,-0.402251 -w ibex-sun -t 2017/12:12:12:02:17

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.155422,-0.902241,-0.402251

 which is     R.A. +260.226 Decl. -23.719

 missing      R.A. +259.599 Decl. -23.114 (ibex-sun)

 error is     R.A.   +0.627 Decl.  +0.605

 for a total  0.835 deg

ibex_rotate -o -u -0.155422,-0.90224,-0.402251 -w ibex-sun -t 2017/12:16:10:15:40

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.155422,-0.902241,-0.402251

 which is     R.A. +260.226 Decl. -23.719

 missing      R.A. +263.852 Decl. -23.338 (ibex-sun)

 error is     R.A.   +3.626 Decl.  +0.381

 for a total  3.346 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 -0.076826,-0.910893,-0.405429 -w ibex-sun -t 2017/12:16:11:58:06

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.076826,-0.910893,-0.405429

 which is     R.A. +265.179 Decl. -23.918

 missing      R.A. +263.929 Decl. -23.340 (ibex-sun)

 error is     R.A.   +1.250 Decl.  +0.578

 for a total  1.283 deg

ibex_rotate -o -u -0.076826,-0.910893,-0.405429 -w ibex-sun -t 2017/12:16:13:33:54

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.076826,-0.910893,-0.405429

 which is     R.A. +265.179 Decl. -23.918

 missing      R.A. +264.002 Decl. -23.342 (ibex-sun)

 error is     R.A.   +1.177 Decl.  +0.576

 for a total  1.223 deg

ibex_rotate -o -u -0.076826,-0.910893,-0.405429 -w ibex-sun -t 2017/12:20:13:26:16

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.076826,-0.910893,-0.405429

 which is     R.A. +265.179 Decl. -23.918

 missing      R.A. +268.454 Decl. -23.405 (ibex-sun)

 error is     R.A.   +3.275 Decl.  +0.513

 for a total  3.044 deg

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 391 apogee:

ibex_rotate -o -u 0.004719,-0.91337,-0.407103 -w ibex-sun -t 2017/12:20:15:38:24 

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.004719,-0.913370,-0.407103

 which is     R.A. +270.296 Decl. -24.023

 missing      R.A. +268.563 Decl. -23.408 (ibex-sun)

 error is     R.A.   +1.733 Decl.  +0.615

 for a total  1.702 deg

ibex_rotate -o -u 0.004719,-0.91337,-0.407103 -w ibex-sun -t 2017-12-25T12:43:18.455Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.004719,-0.913370,-0.407103

 which is     R.A. +270.296 Decl. -24.023

 missing      R.A. +273.968 Decl. -23.406 (ibex-sun)

 error is     R.A.   +3.672 Decl.  +0.617

 for a total  3.418 deg

No Lo O-mode.

There is no overlap with orbit 389 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken