IBEX_2016_147_o0328a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2016_147_o0328a_v001.ccvr

are because we removed the

ACT_SetSpinPulseProtectEnable Enable

commands (2) and because of a long SSR dump contact; the violations are expected.

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

IBEX_2016_147_o0328a_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_147_o0328a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  It starts about 7 hours before perigee and runs for about 4 hours.

There is one moon in Lo FOV session in arc A.  The ATS start time is about 3 hours after that in the OEF and the ATS end time is about 20 minutes 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_Orbit328_Contacts.txt,

for the 3 contacts in the ATS.  The other contact will be a blind acq.

We are doing battery cell balancing this orbit and the balancing commands are correct and offset by enough time from other commands.

The sun precession maneuver at perigee of orbit 327 left us pointing in safe directions for the orbit 328 arc A ascending and descending sequences:

ibex_rotate -o -r +63.409 -d +21.205 -w ibex-sun -t 2016/05:27:05:51:43

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.417311,+0.833679,+0.361706

 which is     R.A.  +63.409 Decl. +21.205

 missing      R.A.  +64.244 Decl. +21.317 (ibex-sun)

 error is     R.A.   +0.835 Decl.  +0.112

 for a total  0.786 deg

ibex_rotate -o -r +63.409 -d +21.205 -w ibex-sun -t 2016/05:30:21:16:11

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.417311,+0.833679,+0.361706

 which is     R.A.  +63.409 Decl. +21.205

 missing      R.A.  +68.065 Decl. +21.871 (ibex-sun)

 error is     R.A.   +4.656 Decl.  +0.666

 for a total  4.382 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 0.377391,0.853683,0.358889 -w ibex-sun -t 2016/05:30:22:59:19

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.377391,+0.853683,+0.358889

 which is     R.A.  +66.151 Decl. +21.032

 missing      R.A.  +68.140 Decl. +21.882 (ibex-sun)

 error is     R.A.   +1.989 Decl.  +0.850

 for a total  2.037 deg

ibex_rotate -o -u 0.377391,0.853683,0.358889 -w ibex-sun -t 2016/05:31:00:34:25

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.377391,+0.853683,+0.358889

 which is     R.A.  +66.151 Decl. +21.032

 missing      R.A.  +68.208 Decl. +21.892 (ibex-sun)

 error is     R.A.   +2.057 Decl.  +0.860

 for a total  2.099 deg

ibex_rotate -o -u 0.377391,0.853683,0.358889 -w ibex-sun -t 2016/06:04:11:06:10

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.377391,+0.853683,+0.358889

 which is     R.A.  +66.151 Decl. +21.032

 missing      R.A.  +72.700 Decl. +22.501 (ibex-sun)

 error is     R.A.   +6.549 Decl.  +1.469

 for a total  6.257 deg

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 329 apogee:

ibex_rotate -o -u 0.304185,0.87784,0.369958 -w ibex-sun -t 2016/06:04:13:26:20

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.304185,+0.877840,+0.369958

 which is     R.A.  +70.888 Decl. +21.713

 missing      R.A.  +72.792 Decl. +22.510 (ibex-sun)

 error is     R.A.   +1.904 Decl.  +0.797

 for a total  1.936 deg

ibex_rotate -o -u 0.304185,0.87784,0.369958 -w ibex-sun -t 2016-06-09T15:38:57.255Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.304185,+0.877840,+0.369958

 which is     R.A.  +70.888 Decl. +21.713

 missing      R.A.  +78.112 Decl. +22.956 (ibex-sun)

 error is     R.A.   +7.224 Decl.  +1.243

 for a total  6.796 deg

No Lo O-mode.

There is no overlap with orbit 327 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken