All,

I have looked at the orbit 345 ATS,

IBEX_2016_301_o0345a_v001.scr,

and I approve.

The only constraint violations in

IBEX_2016_301_o0345a_v001.ccvr

are because we removed the

ACT_SetSpinPulseProtectEnable Enable

commands (2); the violations are expected.

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

IBEX_2016_301_o0345a_v002.stf,

except that the ATS has an SSR_DUMP_NEW command. This is expected as APL is being used for the dump pass.

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_301_o0345a_v001.oef,

and as verified with ibex_orbit.

There are no star tracker 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_Orbit345_Contacts.txt,

for all contacts (3).

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

The inertial maneuver at perigee of orbit 344 left us pointing in safe directions for the orbit 345 arc A ascending and descending sequences:

ibex_rotate -o -u -0.85141,-0.47732,-0.217411 -w ibex-sun -t 2016/10:27:19:54:20

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.851410,-0.477320,-0.217411

which is R.A. +209.276 Decl. -12.557

missing R.A. +212.341 Decl. -13.072 (ibex-sun)

error is R.A. +3.065 Decl. +0.515

for a total 3.033 deg

ibex_rotate -o -u -0.85141,-0.47732,-0.217411 -w ibex-sun -t 2016/10:31:08:33:55

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.851410,-0.477320,-0.217411

which is R.A. +209.276 Decl. -12.557

missing R.A. +215.644 Decl. -14.212 (ibex-sun)

error is R.A. +6.368 Decl. +1.655

for a total 6.412 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 -0.807403,-0.537149,-0.244072 -w ibex-sun -t 2016/10:31:10:17:03

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.807403,-0.537149,-0.244072

which is R.A. +213.635 Decl. -14.127

missing R.A. +215.713 Decl. -14.235 (ibex-sun)

error is R.A. +2.078 Decl. +0.108

for a total 2.018 deg

ibex_rotate -o -u -0.807403,-0.537149,-0.244072 -w ibex-sun -t 2016/10:31:11:52:09

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.807403,-0.537149,-0.244072

which is R.A. +213.635 Decl. -14.127

missing R.A. +215.777 Decl. -14.255 (ibex-sun)

error is R.A. +2.142 Decl. +0.128

for a total 2.081 deg

ibex_rotate -o -u -0.807403,-0.537149,-0.244072 -w ibex-sun -t 2016/11:04:19:51:05

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.807403,-0.537149,-0.244072

which is R.A. +213.635 Decl. -14.127

missing R.A. +220.154 Decl. -15.598 (ibex-sun)

error is R.A. +6.519 Decl. +1.471

for a total 6.470 deg

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 346 apogee:

ibex_rotate -o -u -0.759329,-0.593125,-0.267625 -w ibex-sun -t 2016/11:04:22:10:26

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.759329,-0.593125,-0.267625

which is R.A. +217.994 Decl. -15.523

missing R.A. +220.257 Decl. -15.631 (ibex-sun)

error is R.A. +2.263 Decl. +0.108

for a total 2.183 deg

ibex_rotate -o -u -0.759329,-0.593125,-0.267625 -w ibex-sun -t 2016-11-09T19:48:25.124Z

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

points axis +1.000000,+0.000000,+0.000000

towards ECI -0.759329,-0.593125,-0.267625

which is R.A. +217.994 Decl. -15.523

missing R.A. +225.043 Decl. -17.084 (ibex-sun)

error is R.A. +7.049 Decl. +1.561

for a total 6.943 deg

No Lo O-mode.

There is no overlap with orbit 344 commands by manual inspection or by checking at

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

Command Approval Checklist is attached.

Ken

From: "Wesley.Sheral" <sheral.wesley@orbitalatk.com>
To: "David Heirtzler" <dheirtzl@atlas.sr.unh.edu>, "IBEX-FDG" <IBEX.fdg@applieddefense.com>, "IBEXOPS" <IBEXOPS@gmail.com>, "ISOC" <isocops@lists.sr.unh.edu>, "Ken Fairchild" <fair-play@comcast.net>, "Lockwood.Robert" <robert.lockwood@orbitalatk.com>, "Michelle Reno" <mreno@swri.edu>, "Nigel Angold" <nigel.angold@nasa.gov>, "Paul Janzen" <paul.janzen@umontana.edu>, "Perry.Tim" <tim.perry@orbitalatk.com>, "Tyler.Ryan" <ryan.tyler@orbitalatk.com>, "Wesley.Sheral" <sheral.wesley@orbitalatk.com>
Sent: Friday, October 14, 2016 8:12:34 AM
Subject: IBEX Orbit# 345 ATS Approval (27 Oct 16 - 5 Nov 16)

Guys,

Here are the planning files and ATS for Orbit# 345.

Please respond to this email thread with you questions and approvals.

Approvals are required before 16 Oct 16 @2000 UTC

Note the following

1. APL-18 SSR_Dump/Tracking Contact

IBEX,APL-18,ADD,11/05/16,310,04:00:00,11/05/16,310,05:00:00,,11re-Descending Perigee 2K-320K IBEX Orbit# 345 SSR_Dump/Tracking Contact

2. Command Load Constraint Violation Report

IBEX_2016_301_o0345a_v001.scr

==========================

HARD CONSTRAINT VIOLATIONS

==========================

NO VIOLATIONS.

==========================

SOFT CONSTRAINT VIOLATIONS

==========================

IBX-CLC-016: No command to enable spin pulse protection was found after

transition to science mode at 2016/10/27 18:15:58 UTC

IBX-CLC-016: No command to enable spin pulse protection was found after

transition to science mode at 2016/10/31 11:22:09 UTC

==============

OTHER MESSAGES

==============

NO MESSAGES.

Sheral R. Wesley

IBEX Mission OPS

CRS/CYGNUS Mission Planning

Bldg. 2 Room 1337

Office (703) 406-5641

Cell (202) 236-0802

cid:image001.jpg@01D04F6C.5A1C97F0

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*********************