IBEX_2017_018_o0354a_v002.scr,

IBEX_2017_018_o0354a_v001.ccvr

are because we removed the

ACT_SetSpinPulseProtectEnable Enable

commands (2); the violations are expected.

IBEX_2017_018_o0354a_v003.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_018_o0354a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage starts 1- days before apogee and runs for over 3 1/2 days.  Some despinning may be required due to this outage.

The OEF includes two moon in Lo FOV sessions but there is only one in the ATS.  The arc A session in the OEF is a short session (~2 hours) and is not included in the ATS.  The arc B session is longer and the appropriate commands appear in the ATS.  The ATS start time is 4 1/2 hours before that in the OEF and the ATS end time is 7 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_Orbit354_Contacts.txt,

for all contacts (5).

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

The inertial maneuver at perigee of orbit 353 left us pointing in safe directions for the orbit 354 arc A ascending and descending sequences:

ibex_rotate -o -u 0.485271,-0.759002,-0.434084 -w ibex-sun -t 2017/01:18:23:47:49

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.485271,-0.759002,-0.434084

 which is     R.A. +302.593 Decl. -25.727

 missing      R.A. +301.024 Decl. -20.397 (ibex-sun)

 error is     R.A.   +1.569 Decl.  +5.330

 for a total  5.522 deg

ibex_rotate -o -u 0.485271,-0.759002,-0.434084 -w ibex-sun -t 2017/01:22:02:26:44

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.485271,-0.759002,-0.434084

 which is     R.A. +302.593 Decl. -25.727

 missing      R.A. +304.320 Decl. -19.738 (ibex-sun)

 error is     R.A.   +1.727 Decl.  +5.989

 for a total  6.197 deg

The inertial 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 -u 0.556508,-0.758676,-0.338689 -w ibex-sun -t 2017/01:22:04:09:52

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.556508,-0.758676,-0.338689

 which is     R.A. +306.261 Decl. -19.797

 missing      R.A. +304.394 Decl. -19.721 (ibex-sun)

 error is     R.A.   +1.867 Decl.  +0.076

 for a total  1.759 deg

ibex_rotate -o -u 0.556508,-0.758676,-0.338689 -w ibex-sun -t 2017/01:22:05:44:58

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.556508,-0.758676,-0.338689

 which is     R.A. +306.261 Decl. -19.797

 missing      R.A. +304.462 Decl. -19.706 (ibex-sun)

 error is     R.A.   +1.799 Decl.  +0.092

 for a total  1.695 deg

ibex_rotate -o -u 0.556508,-0.758676,-0.338689 -w ibex-sun -t 2017/01:27:07:22:45

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.556508,-0.758676,-0.338689

 which is     R.A. +306.261 Decl. -19.797

 missing      R.A. +309.677 Decl. -18.430 (ibex-sun)

 error is     R.A.   +3.416 Decl.  +1.367

 for a total  3.505 deg

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 355 apogee:

ibex_rotate -o -u 0.621391,-0.675047,-0.397724 -w ibex-sun -t 2017/01:27:09:39:07 

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.621391,-0.675047,-0.397724

 which is     R.A. +312.630 Decl. -23.436

 missing      R.A. +309.779 Decl. -18.406 (ibex-sun)

 error is     R.A.   +2.851 Decl.  +5.030

 for a total  5.691 deg

ibex_rotate -o -u 0.621391,-0.675047,-0.397724 -w ibex-sun -t 2017-02-01T09:01:56.211Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.621391,-0.675047,-0.397724

 which is     R.A. +312.630 Decl. -23.436

 missing      R.A. +314.967 Decl. -17.079 (ibex-sun)

 error is     R.A.   +2.337 Decl.  +6.357

 for a total  6.723 deg

No Lo O-mode.

There is no overlap with orbit 353 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken