IBEX_2022_146_o0569a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2022_146_o0569a_v001.ccvr

are from the removal of the

ACT_SetSpinPulseProtectEnable Enable

commands (2); the violations are expected.

Ascending and descending command sequences are consistent with each other, 15 Re ascending, the apogee maneuver time and 15 Re descending as determined from the OEF,

IBEX_2022_146_o0569a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage. The outage starts ~5 hours before perigee and runs for about 8 hours. No despinning should be required due to this outage.

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

IBEX_Orbit569_Contacts.txt,

for all contacts (3).

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

The inertial precession maneuver at perigee of orbit 568 leaves us pointing in safe directions for the orbit 569 arc A ascending and descending sequences:

ibex_rotate -o -u 0.452191,0.821888,0.346445 -w ibex-sun -t 2022/05:27:09:57:24

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.452191,+0.821888,+0.346445

which is R.A. +61.181 Decl. +20.270

missing R.A. +63.882 Decl. +21.246 (ibex-sun)

error is R.A. +2.701 Decl. +0.976

for a total 2.707 deg

ibex_rotate -o -u 0.452191,0.821888,0.346445 -w ibex-sun -t 2022/05:30:23:30:12

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.452191,+0.821888,+0.346445

which is R.A. +61.181 Decl. +20.270

missing R.A. +67.541 Decl. +21.837 (ibex-sun)

error is R.A. +6.360 Decl. +1.567

for a total 6.138 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 0.384969,0.850711,0.357895 -w ibex-sun -t 2022/05:31:01:13:20

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.384969,+0.850711,+0.357895

which is R.A. +65.652 Decl. +20.971

missing R.A. +67.615 Decl. +21.849 (ibex-sun)

error is R.A. +1.963 Decl. +0.878

for a total 2.028 deg

ibex_rotate -o -u 0.384969,0.850711,0.357895 -w ibex-sun -t 2022/05:31:02:48:26

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.384969,+0.850711,+0.357895

which is R.A. +65.652 Decl. +20.971

missing R.A. +67.684 Decl. +21.860 (ibex-sun)

error is R.A. +2.032 Decl. +0.889

for a total 2.090 deg

ibex_rotate -o -u 0.384969,0.850711,0.357895 -w ibex-sun -t 2022/06:04:11:49:43

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.384969,+0.850711,+0.357895

which is R.A. +65.652 Decl. +20.971

missing R.A. +72.196 Decl. +22.445 (ibex-sun)

error is R.A. +6.544 Decl. +1.474

for a total 6.255 deg

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 570 apogee:

ibex_rotate -o -u 0.313077,0.87492,0.369455 -w ibex-sun -t 2022/06:04:14:31:22

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.313077,+0.874920,+0.369455

which is R.A. +70.311 Decl. +21.682

missing R.A. +72.306 Decl. +22.453 (ibex-sun)

error is R.A. +1.995 Decl. +0.771

for a total 2.003 deg

ibex_rotate -o -u 0.313077,0.87492,0.369455 -w ibex-sun -t 2022-06-09T09:26:45.248Z

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

points axis +1.000000,+0.000000,+0.000000

towards ECI +0.313077,+0.874920,+0.369455

which is R.A. +70.311 Decl. +21.682

missing R.A. +77.215 Decl. +22.929 (ibex-sun)

error is R.A. +6.904 Decl. +1.247

for a total 6.508 deg

Lo Normal mode for the entire orbit.

There is no overlap with orbit 568 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken