IBEX_2017_046_o0357a_v003.scr,

and I approve.

The only constraint violations in

IBEX_2017_046_o0357a_v001.ccvr

are because we removed the

ACT_SetSpinPulseProtectEnable Enable

commands (2); the violations are expected.

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

IBEX_2017_046_o0357a_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_2017_046_o0357a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage starts about 15 1/2 hours after apogee and runs for almost 3 days.  Some despinning may be required due to this outage.

There is a moon in Lo FOV session in arc B.  The ATS start time is 2 1/2 hours after that in the OEF and the ATS end time is about an hour 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_Orbit357_Contacts.txt,

for all contacts (3).

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

The inertial maneuver at perigee of orbit 356 left us pointing in safe directions for the orbit 357 arc A ascending and descending sequences:

ibex_rotate -o -u 0.838433,-0.453812,-0.301804 -w ibex-sun -t 2017/02:15:19:23:02

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.838433,-0.453812,-0.301804

 which is     R.A. +331.575 Decl. -17.566

 missing      R.A. +329.309 Decl. -12.496 (ibex-sun)

 error is     R.A.   +2.266 Decl.  +5.070

 for a total  5.522 deg

ibex_rotate -o -u 0.838433,-0.453812,-0.301804 -w ibex-sun -t 2017/02:19:10:25:07

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.838433,-0.453812,-0.301804

 which is     R.A. +331.575 Decl. -17.566

 missing      R.A. +332.864 Decl. -11.217 (ibex-sun)

 error is     R.A.   +1.289 Decl.  +6.349

 for a total  6.471 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 0.845686,-0.485839,-0.220851 -w ibex-sun -t 2017/02:19:12:08:15

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.845686,-0.485839,-0.220851

 which is     R.A. +330.123 Decl. -12.759

 missing      R.A. +332.932 Decl. -11.191 (ibex-sun)

 error is     R.A.   +2.809 Decl.  +1.568

 for a total  3.164 deg

ibex_rotate -o -u 0.845686,-0.485839,-0.220851 -w ibex-sun -t 2017/02:19:13:43:21

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.845686,-0.485839,-0.220851

 which is     R.A. +330.123 Decl. -12.759

 missing      R.A. +332.995 Decl. -11.167 (ibex-sun)

 error is     R.A.   +2.872 Decl.  +1.592

 for a total  3.229 deg

ibex_rotate -o -u 0.845686,-0.485839,-0.220851 -w ibex-sun -t 2017/02:24:00:02:26

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.845686,-0.485839,-0.220851

 which is     R.A. +330.123 Decl. -12.759

 missing      R.A. +337.117 Decl.  -9.546 (ibex-sun)

 error is     R.A.   +6.994 Decl.  +3.213

 for a total  7.576 deg

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 358 apogee:

ibex_rotate -o -u 0.920309,-0.354749,-0.164875 -w ibex-sun -t 2017/02:24:02:13:41 

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.920309,-0.354749,-0.164875

 which is     R.A. +338.920 Decl.  -9.490

 missing      R.A. +337.204 Decl.  -9.514 (ibex-sun)

 error is     R.A.   +1.716 Decl.  +0.024

 for a total  1.693 deg

ibex_rotate -o -u 0.920309,-0.354749,-0.164875 -w ibex-sun -t 2017-02-28T23:46:27.203Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.920309,-0.354749,-0.164875

 which is     R.A. +338.920 Decl.  -9.490

 missing      R.A. +341.940 Decl.  -7.681 (ibex-sun)

 error is     R.A.   +3.020 Decl.  +1.809

 for a total  3.492 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 356 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken