IBEX_2016_274_o0342a_v002.scr,

and I approve.

The only constraint violations in

IBEX_2016_274_o0342a_v001.ccvr

IBEX_2016_274_o0342a_v002.stf,

except that the ATS has an SSR_DUMP_NEW command as well as SSR pointer reset commands.  This is expected as APL is being used for the dump pass.

IBEX_2016_274_o0342a_v001.oef,

and as verified with ibex_orbit.

There are two star tracker outages.  The first starts about 5 hours after orbit 341 perigee and ends about an hour after 15 Re ascending.  The second starts about 7 hours after perigee and runs for about 4 hours.  No despinning should be required due to these outages.

There are no moon in Lo FOV sessions.

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

IBEX_Orbit342_Contacts.txt,

for all contacts (3).  There is a 5 minute discrepancy between the end time of the APL contact in the contacts file and the ATS.  I checked with Tim and evidently the contacts file is incorrect.

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

The inertial maneuver at perigee of orbit 341 left us pointing in safe directions for the orbit 342 arc A ascending and descending sequences:

ibex_rotate -o -u -0.995985,-0.077826,-0.04423 -w ibex-sun -t 2016/09:30:23:51:39

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.995985,-0.077826,-0.044230

 which is     R.A. +184.468 Decl.  -2.535

 missing      R.A. +187.348 Decl.  -3.191 (ibex-sun)

 error is     R.A.   +2.880 Decl.  +0.656

 for a total  2.951 deg

ibex_rotate -o -u -0.995985,-0.077826,-0.04423 -w ibex-sun -t 2016/10:04:10:32:16

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.995985,-0.077826,-0.044230

 which is     R.A. +184.468 Decl.  -2.535

 missing      R.A. +190.375 Decl.  -4.498 (ibex-sun)

 error is     R.A.   +5.907 Decl.  +1.963

 for a total  6.214 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 -0.986406,-0.146381,-0.074665 -w ibex-sun -t 2016/10:04:12:12:29

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.986406,-0.146381,-0.074665

 which is     R.A. +188.441 Decl.  -4.282

 missing      R.A. +190.438 Decl.  -4.525 (ibex-sun)

 error is     R.A.   +1.997 Decl.  +0.243

 for a total  2.006 deg

ibex_rotate -o -u -0.986406,-0.146381,-0.074665 -w ibex-sun -t 2016/10:04:13:50:30

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.986406,-0.146381,-0.074665

 which is     R.A. +188.441 Decl.  -4.282

 missing      R.A. +190.500 Decl.  -4.550 (ibex-sun)

 error is     R.A.   +2.059 Decl.  +0.268

 for a total  2.071 deg

ibex_rotate -o -u -0.986406,-0.146381,-0.074665 -w ibex-sun -t 2016/10:08:20:15:30

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.986406,-0.146381,-0.074665

 which is     R.A. +188.441 Decl.  -4.282

 missing      R.A. +194.521 Decl.  -6.183 (ibex-sun)

 error is     R.A.   +6.080 Decl.  +1.901

 for a total  6.346 deg

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 343 apogee:

ibex_rotate -o -u -0.971114,-0.214917,-0.103678 -w ibex-sun -t 2016/10:08:22:30:34

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.971114,-0.214917,-0.103678

 which is     R.A. +192.479 Decl.  -5.951

 missing      R.A. +194.612 Decl.  -6.221 (ibex-sun)

 error is     R.A.   +2.133 Decl.  +0.270

 for a total  2.138 deg

ibex_rotate -o -u -0.971114,-0.214917,-0.103678 -w ibex-sun -t 2016-10-13T18:15:13.814Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.971114,-0.214917,-0.103678

 which is     R.A. +192.479 Decl.  -5.951

 missing      R.A. +198.925 Decl.  -8.033 (ibex-sun)

 error is     R.A.   +6.446 Decl.  +2.082

 for a total  6.728 deg

No Lo O-mode.

There is no overlap with orbit 341 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken