IBEX_2016_047_o0317a_v001.scr,

and I approve.

The only constraint violation in

IBEX_2016_047_o0317a_v001.ccvr

is related to the eclipse and is expected.

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

IBEX_2016_047_o0317a_v003.stf

except that the ATS has an SSR_DUMP_NEW command.  This is expected as APL is being used for the 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_2016_047_o0317a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  It starts 7 hours after apogee and runs for 3+ days.  Some despinning may be required due to this outage.

There is one moon in Lo FOV session in arc A.  The ATS and OEF start times are the same and the ATS end time is 2 hours before that in the OEF.  This difference is not unusual.

The ground station command sequences are correct and the timing and bit rates match those in the contacts file,

IBEX_Orbit317_Contacts.txt,

for all contacts (3).

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 316 left us pointing in safe directions for the orbit 317 arc A ascending and descending sequences:

ibex_rotate -o -u 0.838386,-0.453919,-0.301771 -w ibex-sun -t 2016/02:16:13:15:35

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. +329.321 Decl. -12.488 (ibex-sun)

 error is     R.A.   +2.247 Decl.  +5.076

 for a total  5.520 deg

ibex_rotate -o -u 0.838386,-0.453919,-0.301771 -w ibex-sun -t 2016/02:20:02:37:06

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. +332.793 Decl. -11.248 (ibex-sun)

 error is     R.A.   +1.225 Decl.  +6.316

 for a total  6.426 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 0.851682,-0.477004,-0.217036 -w ibex-sun -t 2016/02:20:04:20:14

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.851682,-0.477004,-0.217036

 which is     R.A. +330.748 Decl. -12.535

 missing      R.A. +332.861 Decl. -11.223 (ibex-sun)

 error is     R.A.   +2.113 Decl.  +1.312

 for a total  2.449 deg

ibex_rotate -o -u 0.851682,-0.477004,-0.217036 -w ibex-sun -t 2016/02:20:05:55:20

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.851682,-0.477004,-0.217036

 which is     R.A. +330.748 Decl. -12.535

 missing      R.A. +332.923 Decl. -11.199 (ibex-sun)

 error is     R.A.   +2.175 Decl.  +1.336

 for a total  2.513 deg

ibex_rotate -o -u 0.851682,-0.477004,-0.217036 -w ibex-sun -t 2016/02:24:15:56:00

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.851682,-0.477004,-0.217036

 which is     R.A. +330.748 Decl. -12.535

 missing      R.A. +337.040 Decl.  -9.582 (ibex-sun)

 error is     R.A.   +6.292 Decl.  +2.953

 for a total  6.844 deg

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 318 apogee:

ibex_rotate -o -u 0.91981,-0.355866,-0.165254 -w ibex-sun -t 2016/02:24:17:59:13

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.919810,-0.355866,-0.165254

 which is     R.A. +338.849 Decl.  -9.512

 missing      R.A. +337.122 Decl.  -9.550 (ibex-sun)

 error is     R.A.   +1.727 Decl.  +0.038

 for a total  1.704 deg

ibex_rotate -o -u 0.91981,-0.355866,-0.165254 -w ibex-sun -t 2016-02-29T14:58:17.025Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.919810,-0.355866,-0.165254

 which is     R.A. +338.849 Decl.  -9.512

 missing      R.A. +341.827 Decl.  -7.732 (ibex-sun)

 error is     R.A.   +2.978 Decl.  +1.780

 for a total  3.441 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 316 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken