IBEX_2016_038_o0316a_v001.scr,

and I approve.

There are no constraint violations in

IBEX_2016_038_o0316a_v001.ccvr.

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

IBEX_2016_038_o0316a_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_038_o0316a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  It starts about 8 hours before apogee and runs for 3+ days.  Some despinning may be required due to this outage.

There is one moon in Lo FOV session that starts in arc A and runs into arc B.  The ATS start time is about an hour after that in the OEF and the ATS end time is about 3 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_Orbit316_Contacts.txt

for the two contacts in the ATS.  The APL contact commands will be in a separate ATS.

There is an eclipse near perigee and the LE flag set and unset commands follow Ryan's recommendations and are offset by enough time from other commands.

The inertial maneuver at perigee of orbit 315 left us pointing in safe directions for the orbit 316 arc A ascending and descending sequences:

ibex_rotate -o -u 0.743979,-0.568362,-0.351368 -w ibex-sun -t 2016/02:07:15:29:53

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.743979,-0.568362,-0.351368

 which is     R.A. +322.622 Decl. -20.571

 missing      R.A. +320.542 Decl. -15.418 (ibex-sun)

 error is     R.A.   +2.080 Decl.  +5.153

 for a total  5.519 deg

ibex_rotate -o -u 0.743979,-0.568362,-0.351368 -w ibex-sun -t 2016/02:11:02:27:13

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.743979,-0.568362,-0.351368

 which is     R.A. +322.622 Decl. -20.571

 missing      R.A. +323.997 Decl. -14.333 (ibex-sun)

 error is     R.A.   +1.375 Decl.  +6.238

 for a total  6.374 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 0.757916,-0.594731,-0.268062 -w ibex-sun -t 2016/02:11:04:10:21

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.757916,-0.594731,-0.268062

 which is     R.A. +321.879 Decl. -15.549

 missing      R.A. +324.067 Decl. -14.310 (ibex-sun)

 error is     R.A.   +2.188 Decl.  +1.239

 for a total  2.450 deg

ibex_rotate -o -u 0.757916,-0.594731,-0.268062 -w ibex-sun -t 2016/02:11:05:45:27

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.757916,-0.594731,-0.268062

 which is     R.A. +321.879 Decl. -15.549

 missing      R.A. +324.131 Decl. -14.288 (ibex-sun)

 error is     R.A.   +2.252 Decl.  +1.261

 for a total  2.515 deg

ibex_rotate -o -u 0.757916,-0.594731,-0.268062 -w ibex-sun -t 2016/02:15:13:19:55

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.757916,-0.594731,-0.268062

 which is     R.A. +321.879 Decl. -15.549

 missing      R.A. +328.279 Decl. -12.824 (ibex-sun)

 error is     R.A.   +6.400 Decl.  +2.725

 for a total  6.776 deg

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 317 apogee:

ibex_rotate -o -u 0.838386,-0.453919,-0.301771 -w ibex-sun -t 2016/02:15:15:24:12

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.838386,-0.453919,-0.301771

 which is     R.A. +331.568 Decl. -17.564

 missing      R.A. +328.365 Decl. -12.794 (ibex-sun)

 error is     R.A.   +3.203 Decl.  +4.770

 for a total  5.683 deg

ibex_rotate -o -u 0.838386,-0.453919,-0.301771 -w ibex-sun -t 2016-02-20T14:14:48.778Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.838386,-0.453919,-0.301771

 which is     R.A. +331.568 Decl. -17.564

 missing      R.A. +333.250 Decl. -11.074 (ibex-sun)

 error is     R.A.   +1.682 Decl.  +6.490

 for a total  6.691 deg

Lo O-mode in arc A (plan 6,7,1,1).  O-mode timing matches that specified in the ISN season memo.  There is more than 1 hour between the end of the ascending sequence and the start of O-mode and also more than an hour after O-mode ends and the start of the descending sequence.

There is no overlap with orbit 315 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken