IBEX_2016_221_o0336a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2016_221_o0336a_v001.ccvr

are because of the eclipse and because we removed the

ACT_SetSpinPulseProtectEnable Enable

commands (2); the violations are expected.

The PL commands in the v001 ATS match those in the v004 STF,

IBEX_2016_221_o0336a_v004.stf.

Ascending and descending command sequences are consistent with each other and 15 Re ascending, the apogee maneuver time, the eclipse time and 15 Re descending as determined from the crossing times report,

IBEX_CrossingTimes_2016_202_23_48_v001.txt,

and as verified with ibex_orbit.

There are two overlapping star tracker outages.  The first starts about 2 1/2 hours before perigee.  The second starts during the first one and ends about 13 hours after the first one begins.  No despinning should be required due to these outages.

There is one moon in Lo FOV session in arc B.  The ATS start time is about 1 1/2 hours after that in the OEF.  This difference is not unusual.  The session ends before the post-eclipse ascending sequence completion time so explicit session end commands do not appear in the ATS.

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

IBEX_Orbit336_Contacts.txt,

for all contacts (3).

The LE flag on/off commands follow Ryan's recommendations and the eclipse descending/ascending sequences are offset from the LE set/unset commands by the required 2 hours.

The inertial maneuver at perigee of orbit 335 left us pointing in safe directions for the orbit 336 arc A ascending and descending sequences:

ibex_rotate -o -u -0.688092,0.669538,0.279728 -w ibex-sun -t 2016/08:08:14:33:12

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.688092,+0.669538,+0.279728

 which is     R.A. +135.783 Decl. +16.244

 missing      R.A. +138.661 Decl. +15.962 (ibex-sun)

 error is     R.A.   +2.878 Decl.  +0.282

 for a total  2.779 deg

ibex_rotate -o -u -0.688092,0.669538,0.279728 -w ibex-sun -t 2016/08:12:02:29:57

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.688092,+0.669538,+0.279728

 which is     R.A. +135.783 Decl. +16.244

 missing      R.A. +141.955 Decl. +14.924 (ibex-sun)

 error is     R.A.   +6.172 Decl.  +1.320

 for a total  6.089 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 -0.739557,0.621575,0.258263 -w ibex-sun -t 2016/08:12:04:13:05

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.739557,+0.621575,+0.258263

 which is     R.A. +139.954 Decl. +14.967

 missing      R.A. +142.023 Decl. +14.903 (ibex-sun)

 error is     R.A.   +2.070 Decl.  +0.064

 for a total  2.001 deg

ibex_rotate -o -u -0.739557,0.621575,0.258263 -w ibex-sun -t 2016/08:12:05:48:11

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.739557,+0.621575,+0.258263

 which is     R.A. +139.954 Decl. +14.967

 missing      R.A. +142.087 Decl. +14.883 (ibex-sun)

 error is     R.A.   +2.133 Decl.  +0.084

 for a total  2.063 deg

ibex_rotate -o -u -0.739557,0.621575,0.258263 -w ibex-sun -t 2016/08:16:13:10:32

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.739557,+0.621575,+0.258263

 which is     R.A. +139.954 Decl. +14.967

 missing      R.A. +146.214 Decl. +13.573 (ibex-sun)

 error is     R.A.   +6.260 Decl.  +1.394

 for a total  6.225 deg

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 337 apogee:

ibex_rotate -o -u -0.788417,0.568164,0.23577 -w ibex-sun -t 2016/08:16:15:15:52

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.788417,+0.568164,+0.235770

 which is     R.A. +144.222 Decl. +13.637

 missing      R.A. +146.294 Decl. +13.545 (ibex-sun)

 error is     R.A.   +2.072 Decl.  +0.092

 for a total  2.016 deg

ibex_rotate -o -u -0.788417,0.568164,0.23577 -w ibex-sun -t 2016-08-21T10:58:44.911Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.788417,+0.568164,+0.235770

 which is     R.A. +144.222 Decl. +13.637

 missing      R.A. +150.674 Decl. +11.958 (ibex-sun)

 error is     R.A.   +6.452 Decl.  +1.679

 for a total  6.511 deg

No Lo O-mode.

There is no overlap with orbit 335 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken