IBEX_2016_101_o0323a_Recovery_v001.scr,

IBEX_2016_101_o0323a_Recovery_v001.ccvr

ACT_SetSpinPulseProtectEnable Enable

commands; the violations are expected.

The PL commands in the v001 ATS match those in the v003 STF,

IBEX_2016_101_o0323a_v003.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_2016_101_o0323a_Recovery_v001.oef,

and as verified with ibex_orbit.

There are three star tracker outages.  The first starts 3 1/2+ days after apogee and runs for about 14 hours.  The second starts 1/2 hour after the first outage ends and runs for about 3 1/2 hours.  The third starts about 7 hours before perigee and ends about 9 1/2 hours after perigee.  If the star tracker were working some despinning might be required due to the first two outages.

There is one moon in Lo FOV session in arc A.  The ATS start time is 6+ hours after that in the OEF and the ATS end time is an hour after 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_Orbit323_RecoveryContacts.txt,

for the 2 contacts in the ATS.  The descending pass will be rescheduled.

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

The sun precession maneuver at perigee of orbit 322 left us pointing in safe directions for the orbit 323 arc A ascending and descending sequences:

ibex_rotate -o -r +18.801 -d +7.970 -w ibex-sun -t 2016/04:10:21:10:54

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.937500,+0.319169,+0.138655

 which is     R.A.  +18.801 Decl.  +7.970

 missing      R.A.  +19.586 Decl.  +8.257 (ibex-sun)

 error is     R.A.   +0.785 Decl.  +0.287

 for a total  0.828 deg

ibex_rotate -o -r +18.801 -d +7.970 -w ibex-sun -t 2016/04:15:00:19:42

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.937500,+0.319169,+0.138655

 which is     R.A.  +18.801 Decl.  +7.970

 missing      R.A.  +23.515 Decl.  +9.779 (ibex-sun)

 error is     R.A.   +4.714 Decl.  +1.809

 for a total  4.996 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 +23.584 -d +9.807 -w ibex-sun -t 2016/04:15:02:07:50

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.903082,+0.394247,+0.170330

 which is     R.A.  +23.584 Decl.  +9.807

 missing      R.A.  +23.584 Decl.  +9.807 (ibex-sun)

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

 for a total  0.000 deg

ibex_rotate -o -r +23.584 -d +9.807 -w ibex-sun -t 2016/04:15:03:37:56

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.903082,+0.394247,+0.170330

 which is     R.A.  +23.584 Decl.  +9.807

 missing      R.A.  +23.642 Decl.  +9.830 (ibex-sun)

 error is     R.A.   +0.058 Decl.  +0.023

 for a total  0.061 deg

ibex_rotate -o -r +23.584 -d +9.807 -w ibex-sun -t 2016/04:19:06:52:06

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.903082,+0.394247,+0.170330

 which is     R.A.  +23.584 Decl.  +9.807

 missing      R.A.  +27.350 Decl. +11.282 (ibex-sun)

 error is     R.A.   +3.766 Decl.  +1.475

 for a total  3.985 deg

The sun precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 324 apogee:

ibex_rotate -o -r +27.446 -d +11.316 -w ibex-sun -t 2016/04:19:09:28:55

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.870194,+0.451952,+0.196220

 which is     R.A.  +27.446 Decl. +11.316

 missing      R.A.  +27.446 Decl. +11.316 (ibex-sun)

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

 for a total  0.000 deg

ibex_rotate -o -r +27.446 -d +11.316 -w ibex-sun -t 2016-04-24T08:19:47.686Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.870194,+0.451952,+0.196220

 which is     R.A.  +27.446 Decl. +11.316

 missing      R.A.  +32.217 Decl. +12.981 (ibex-sun)

 error is     R.A.   +4.771 Decl.  +1.665

 for a total  4.952 deg

No Lo O-mode.

There is no overlap with orbit 322 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken