IBEX_2017_199_o0374a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2017_199_o0374a_v001.ccvr

are from the removal of the

ACT_SetSpinPulseProtectEnable Enable

commands (2); the violations are expected.

The PL commands in the v001 ATS match those in the v002 STF,

IBEX_2017_199_o0374a_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_2017_199_o0374a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage.  The outage start 2 hours before perigee and runs for almost 7 hours.  Despinning should not be required due to this outage.

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_Orbit374_Contacts.txt,

for all contacts (2).

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 373 left us pointing in safe directions for the orbit 374 arc A ascending and descending sequences:

ibex_rotate -o -u -0.393433,0.847229,0.35695 -w ibex-sun -t 2017/07:18:13:49:37

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.393433,+0.847229,+0.356950

 which is     R.A. +114.909 Decl. +20.913

 missing      R.A. +117.839 Decl. +20.953 (ibex-sun)

 error is     R.A.   +2.930 Decl.  +0.040

 for a total  2.737 deg

ibex_rotate -o -u -0.393433,0.847229,0.35695 -w ibex-sun -t 2017/07:22:06:02:59

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.393433,+0.847229,+0.356950

 which is     R.A. +114.909 Decl. +20.913

 missing      R.A. +121.526 Decl. +20.252 (ibex-sun)

 error is     R.A.   +6.617 Decl.  +0.661

 for a total  6.229 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 -0.462095,0.817716,0.343234 -w ibex-sun -t 2017/07:22:07:46:07

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.462095,+0.817716,+0.343234

 which is     R.A. +119.471 Decl. +20.074

 missing      R.A. +121.598 Decl. +20.239 (ibex-sun)

 error is     R.A.   +2.127 Decl.  +0.165

 for a total  2.004 deg

ibex_rotate -o -u -0.462095,0.817716,0.343234 -w ibex-sun -t 2017/07:22:09:21:13

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.462095,+0.817716,+0.343234

 which is     R.A. +119.471 Decl. +20.074

 missing      R.A. +121.665 Decl. +20.226 (ibex-sun)

 error is     R.A.   +2.194 Decl.  +0.152

 for a total  2.066 deg

ibex_rotate -o -u -0.462095,0.817716,0.343234 -w ibex-sun -t 2017/07:26:21:39:04

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.462095,+0.817716,+0.343234

 which is     R.A. +119.471 Decl. +20.074

 missing      R.A. +126.194 Decl. +19.306 (ibex-sun)

 error is     R.A.   +6.723 Decl.  +0.768

 for a total  6.376 deg

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 375 apogee:

ibex_rotate -o -u -0.530544,0.781435,0.328455  -w ibex-sun -t 2017/07:26:23:53:40

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.530544,+0.781435,+0.328455

 which is     R.A. +124.174 Decl. +19.175

 missing      R.A. +126.283 Decl. +19.284 (ibex-sun)

 error is     R.A.   +2.109 Decl.  +0.109

 for a total  1.994 deg

ibex_rotate -o -u -0.530544,0.781435,0.328455  -w ibex-sun -t 2017-07-31T22:44:28.220Z

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

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  -0.530544,+0.781435,+0.328455

 which is     R.A. +124.174 Decl. +19.175

 missing      R.A. +131.056 Decl. +18.081 (ibex-sun)

 error is     R.A.   +6.882 Decl.  +1.094

 for a total  6.612 deg

No Lo O-mode.

There is no overlap with orbit 373 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken