IBEX_2019_341_o0470a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2019_341_o0470a_v001.ccvr

are from the removal of the

ACT_SetSpinPulseProtectEnable Enable

commands (2) and the length of a contact; the violations are expected.

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

IBEX_2019_341_o0470a_v002.stf.

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_2019_341_o0470a_v001.oef,

and as verified with ibex_orbit.

There is one star tracker outage. The outage starts 1.5+ days after 15 Re ascending and runs for 3+ days. Some despinning may 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_Orbit470_Contacts.txt,

for all contacts (3).

We are not doing battery cell balancing this orbit, we'll do it again in the next orbit.

The inertial maneuver at perigee of orbit 469 left us pointing in safe directions for the orbit 470 arc A ascending and descending sequences:

ibex_rotate -o -u -0.234192,-0.887887,-0.395994 -w ibex-sun -t 2019/12:08:09:08:27

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.234192,-0.887887,-0.395994

which is R.A. +255.224 Decl. -23.328

missing R.A. +254.505 Decl. -22.692 (ibex-sun)

error is R.A. +0.719 Decl. +0.636

for a total 0.918 deg

ibex_rotate -o -u -0.234192,-0.887887,-0.395994 -w ibex-sun -t 2019/12:13:09:16:27

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.234192,-0.887887,-0.395994

which is R.A. +255.224 Decl. -23.328

missing R.A. +259.916 Decl. -23.096 (ibex-sun)

error is R.A. +4.692 Decl. +0.232

for a total 4.318 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 -0.153733,-0.902885,-0.401452 -w ibex-sun -t 2019/12:13:10:59:58

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.153733,-0.902886,-0.401452

which is R.A. +260.337 Decl. -23.669

missing R.A. +259.994 Decl. -23.100 (ibex-sun)

error is R.A. +0.343 Decl. +0.569

for a total 0.650 deg

ibex_rotate -o -u -0.153733,-0.902885,-0.401452 -w ibex-sun -t 2019/12:13:12:34:41

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.153733,-0.902886,-0.401452

which is R.A. +260.337 Decl. -23.669

missing R.A. +260.066 Decl. -23.104 (ibex-sun)

error is R.A. +0.271 Decl. +0.565

for a total 0.618 deg

ibex_rotate -o -u -0.153733,-0.902885,-0.401452 -w ibex-sun -t 2019/12:16:23:50:22

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.153733,-0.902886,-0.401452

which is R.A. +260.337 Decl. -23.669

missing R.A. +263.937 Decl. -23.301 (ibex-sun)

error is R.A. +3.600 Decl. +0.368

for a total 3.322 deg

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 471 apogee:

ibex_rotate -o -u -0.069298,-0.911205,-0.406083 -w ibex-sun -t 2019/12:17:03:03:57

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.069298,-0.911205,-0.406083

which is R.A. +265.651 Decl. -23.959

missing R.A. +264.095 Decl. -23.313 (ibex-sun)

error is R.A. +1.556 Decl. +0.646

for a total 1.565 deg

ibex_rotate -o -u -0.069298,-0.911205,-0.406083 -w ibex-sun -t 2019-12-22T00:24:00.806Z

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.069298,-0.911205,-0.406083

which is R.A. +265.651 Decl. -23.959

missing R.A. +269.500 Decl. -23.429 (ibex-sun)

error is R.A. +3.849 Decl. +0.530

for a total 3.564 deg

No Lo O-mode.

There is no overlap with orbit 469 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken