IBEX_2016_002_o0312a_v002.scr,

IBEX_2016_002_o0312a_v001.ccvr.

The PL commands in the v002 ATS match those in the v002 STF,

IBEX_2016_002_o0312a_v002.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_002_o0312a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  It starts 2+ days before apogee and runs for 2+ days.  Some despinning may be required due to this outage.

There are two moon in Lo FOV sessions in arc A (only one in the OEF).  The ATS start time of the first session is the same as the start time in the OEF and the ATS end time of the second session is 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_Orbit312_Contacts.txt,

for all contacts (3).

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

The inertial maneuver at perigee of orbit 311 left us pointing in safe directions for the orbit 312 arc A ascending and descending sequences:

ibex_rotate -o -u 0.212444,-0.892507,-0.397869 -w ibex-sun -t 2016/01:02:19:34:03

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.212444,-0.892507,-0.397869

 which is     R.A. +283.389 Decl. -23.445

 missing      R.A. +282.668 Decl. -22.939 (ibex-sun)

 error is     R.A.   +0.721 Decl.  +0.506

 for a total  0.833 deg

ibex_rotate -o -u 0.212444,-0.892507,-0.397869 -w ibex-sun -t 2016/01:07:15:30:01

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.212444,-0.892507,-0.397869

 which is     R.A. +283.389 Decl. -23.445

 missing      R.A. +287.889 Decl. -22.444 (ibex-sun)

 error is     R.A.   +4.500 Decl.  +1.001

 for a total  4.263 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 0.321914,-0.864816,-0.38531 -w ibex-sun -t 2016/01:07:17:13:09

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.321914,-0.864816,-0.385310

 which is     R.A. +290.417 Decl. -22.663

 missing      R.A. +287.966 Decl. -22.434 (ibex-sun)

 error is     R.A.   +2.451 Decl.  +0.229

 for a total  2.275 deg

ibex_rotate -o -u 0.321914,-0.864816,-0.38531 -w ibex-sun -t 2016/01:07:18:48:15

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.321914,-0.864816,-0.385310

 which is     R.A. +290.417 Decl. -22.663

 missing      R.A. +288.037 Decl. -22.425 (ibex-sun)

 error is     R.A.   +2.380 Decl.  +0.238

 for a total  2.211 deg

ibex_rotate -o -u 0.321914,-0.864816,-0.38531 -w ibex-sun -t 2016/01:10:18:19:28

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.321914,-0.864816,-0.385310

 which is     R.A. +290.417 Decl. -22.663

 missing      R.A. +291.295 Decl. -21.980 (ibex-sun)

 error is     R.A.   +0.878 Decl.  +0.683

 for a total  1.061 deg

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 313 apogee:

ibex_rotate -o -u 0.357338,-0.81404,-0.457874 -w ibex-sun -t 2016/01:10:20:23:51

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.357338,-0.814040,-0.457874

 which is     R.A. +293.700 Decl. -27.250

 missing      R.A. +291.395 Decl. -21.967 (ibex-sun)

 error is     R.A.   +2.305 Decl.  +5.283

 for a total  5.683 deg

ibex_rotate -o -u 0.357338,-0.81404,-0.457874 -w ibex-sun -t 2016-01-15T17:00:52.747Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.357338,-0.814040,-0.457874

 which is     R.A. +293.700 Decl. -27.250

 missing      R.A. +296.677 Decl. -21.208 (ibex-sun)

 error is     R.A.   +2.977 Decl.  +6.042

 for a total  6.623 deg

No Lo O-mode.

There is no overlap with orbit 311 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken