[Isocops] IBEX ORbit# 339 ATS (3 Sept 16 - 12 Sept 16) - v001 approval

Tue Aug 23 21:25:18 EDT 2016

All, 

I have looked at the orbit 339 ATS, 

IBEX_2016_247_o0339a_v001.scr, 

and I approve. 

The only constraint violations in 

IBEX_2016_247_o0339a_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_247_o0339a_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_2016_247_o0339a_v001.oef, 

and as verified with ibex_orbit. 

There is one star tracker outage. The outage starts two hours after perigee and ends 7+ hours later. No despinning should be required due to the outage. 

There is one moon in Lo FOV session in arc B. The ATS start time is an hour after that in the OEF and the ATS end time is about 1 1/2 hours before that in the OEF. These differences are not unusual. 

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

IBEX_Orbit339_Contacts.txt, 

for all contacts (3). 

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 338 left us pointing in safe directions for the orbit 339 arc A ascending and descending sequences: 

ibex_rotate -o -u -0.934776,0.329645,0.132395 -w ibex-sun -t 2016/09:04:08:55:54 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.934776,+0.329645,+0.132395 
which is R.A. +160.575 Decl. +7.608 
missing R.A. +163.401 Decl. +7.042 (ibex-sun) 
error is R.A. +2.826 Decl. +0.566 
for a total 2.860 deg 

ibex_rotate -o -u -0.934776,0.329645,0.132395 -w ibex-sun -t 2016/09:07:19:22:27 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.934776,+0.329645,+0.132395 
which is R.A. +160.575 Decl. +7.608 
missing R.A. +166.434 Decl. +5.772 (ibex-sun) 
error is R.A. +5.859 Decl. +1.836 
for a total 6.102 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 -0.958412,0.265755,0.104025 -w ibex-sun -t 2016/09:07:21:05:35 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.958412,+0.265755,+0.104025 
which is R.A. +164.502 Decl. +5.971 
missing R.A. +166.500 Decl. +5.746 (ibex-sun) 
error is R.A. +1.998 Decl. +0.225 
for a total 2.000 deg 

ibex_rotate -o -u -0.958412,0.265755,0.104025 -w ibex-sun -t 2016/09:07:22:40:41 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.958412,+0.265755,+0.104025 
which is R.A. +164.502 Decl. +5.971 
missing R.A. +166.560 Decl. +5.721 (ibex-sun) 
error is R.A. +2.058 Decl. +0.250 
for a total 2.062 deg 

ibex_rotate -o -u -0.958412,0.265755,0.104025 -w ibex-sun -t 2016/09:12:04:58:10 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.958412,+0.265755,+0.104025 
which is R.A. +164.502 Decl. +5.971 
missing R.A. +170.503 Decl. +4.112 (ibex-sun) 
error is R.A. +6.001 Decl. +1.859 
for a total 6.260 deg 

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 340 apogee: 

ibex_rotate -o -u -0.97719,0.198474,0.075553 -w ibex-sun -t 2016/09:12:07:08:31 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.977190,+0.198474,+0.075553 
which is R.A. +168.519 Decl. +4.333 
missing R.A. +170.585 Decl. +4.076 (ibex-sun) 
error is R.A. +2.066 Decl. +0.257 
for a total 2.077 deg 

ibex_rotate -o -u -0.97719,0.198474,0.075553 -w ibex-sun -t 2016-09-17T02:10:53.952Z 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.977190,+0.198474,+0.075553 
which is R.A. +168.519 Decl. +4.333 
missing R.A. +174.762 Decl. +2.237 (ibex-sun) 
error is R.A. +6.243 Decl. +2.096 
for a total 6.575 deg 

No Lo O-mode. 

There is no overlap with orbit 338 commands by manual inspection or by checking at 

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

Command Approval Checklist is attached. 

Ken 

----- Original Message -----

From: "Wesley.Sheral" <sheral.wesley at orbitalatk.com> 
To: "David Heirtzler" <dheirtzl at atlas.sr.unh.edu>, "IBEX-FDG" <IBEX.fdg at applieddefense.com>, "IBEXOPS" <IBEXOPS at gmail.com>, "ISOC" <isocops at lists.sr.unh.edu>, "Ken Fairchild" <fair-play at comcast.net>, "Lockwood.Robert" <robert.lockwood at orbitalatk.com>, "Michelle Reno" <mreno at swri.edu>, "Nigel Angold" <nigel.angold at nasa.gov>, "Paul Janzen" <paul.janzen at umontana.edu>, "Perry.Tim" <tim.perry at orbitalatk.com>, "Tyler.Ryan" <ryan.tyler at orbitalatk.com>, "Wesley.Sheral" <sheral.wesley at orbitalatk.com> 
Sent: Monday, August 22, 2016 12:28:27 PM 
Subject: IBEX ORbit# 339 ATS (3 Sept 16 - 12 Sept 16) 

Guys, 

Here are the planning files and ATS for Orbit# 339. 

Please respond to this email thread with your comments and approvals 

Approvals are required before 24 Aug 16 @ 1600 UTC 

Note the following 

1. Battery Balancing at PERIGEE 

# Orbit# 339 PERIGEE: Battery Balancing 

# 2016-09-12T16:58:36.817Z,Perigee,orbit:339 

SetLongEclipseFlag TRUE $TIME=2016/09:12:16:00:00 

SetLongEclipseFlag FALSE $TIME=2016/09:12:17:30:00 

2. Moon in Lo FOV Commands 

# 2016-09-11T01:51:05.223Z,MoonInLoFovStart,orbit:339 

# 2016-09-11T16:20:30.776Z,MoonInLoFovStop,orbit:339 

3. Command Load Constraint Violation Report 

IBEX_2016_247_o0339a_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 2016/09/04 07:28:59 UTC 

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

transition to science mode at 2016/09/07 22:10:41 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 

Notice: This e-mail is intended solely for use of the individual or entity to which it is addressed and may contain information that is proprietary, privileged and exempt from disclosure under applicable law. If the reader is not the intended recipient or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. This communication may also contain data subject to U.S. export laws. If so, that data subject to the International Traffic in Arms Regulation cannot be disseminated, distributed or copied to foreign nationals, residing in the U.S. or abroad, absent the express prior approval of the U.S. Department of State. If you have received this communication in error, please notify the sender by reply e-mail and destroy the e-mail message and any physical copies made of the communication. Thank you. 
********** ********** 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20160824/c76b7685/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 2392 bytes
Desc: image001.jpg
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20160824/c76b7685/image001-0001.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IBEX-Command-Approval-Checklist-Rev16b-o0339_KWF.doc
Type: application/msword
Size: 120832 bytes
Desc: not available
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20160824/c76b7685/IBEX-Command-Approval-Checklist-Rev16b-o0339_KWF-0001.doc>