[Isocops] IBEX Orbit# 222 ATS (4 Oct 13 - 14 Oct 13) - v001 approval

Sun Sep 22 21:14:32 EDT 2013

All, 

I have looked at the orbit 222 ATS, 

IBEX_2013_277_o0222a_v001.scr, 

and I approve. 

There are no constraint violations in 

IBEX_2013_277_o0222a_v001.ccvr. 

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

IBEX_2013_277_o0222a_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_2013_277_o0222a_v001.oef, 

and as verified with ibex_orbit. 

There is one star tracker outage. It starts about 3 hours after perigee and ends about 7 hours later. No despinning should be required due to this outage. 

There is one moon in Lo FOV session in arc B. The ATS start time is about 45 minutes after that in the OEF and the ATS end time is about an hour after 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_Orbit222Contacts.txt, 

for all contacts (3). 

No battery cell balancing this orbit. 

The inertial maneuver at perigee of orbit 221 left us pointing in safe directions for orbit 222 arc A ascending and descending sequences: 

ibex_rotate -o -u -0.986774,-0.144482,-0.073499 -w ibex-sun -t 2013/10:05:11:05:34 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.986774,-0.144482,-0.073499 
which is R.A. +188.330 Decl. -4.215 
missing R.A. +191.185 Decl. -4.808 (ibex-sun) 
error is R.A. +2.855 Decl. +0.594 
for a total 2.907 deg 

ibex_rotate -o -u -0.986774,-0.144482,-0.073499 -w ibex-sun -t 2013/10:09:06:14:03 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.986774,-0.144482,-0.073499 
which is R.A. +188.330 Decl. -4.215 
missing R.A. +194.580 Decl. -6.264 (ibex-sun) 
error is R.A. +6.250 Decl. +2.049 
for a total 6.552 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 -0.971082,-0.214857,-0.104095 -w ibex-sun -t 2013/10:09:04:16:09 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.971082,-0.214857,-0.104095 
which is R.A. +192.476 Decl. -5.975 
missing R.A. +194.504 Decl. -6.232 (ibex-sun) 
error is R.A. +2.028 Decl. +0.257 
for a total 2.033 deg 

ibex_rotate -o -u -0.971082,-0.214857,-0.104095 -w ibex-sun -t 2013/10:09:05:51:15 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.971082,-0.214857,-0.104095 
which is R.A. +192.476 Decl. -5.975 
missing R.A. +194.565 Decl. -6.258 (ibex-sun) 
error is R.A. +2.089 Decl. +0.283 
for a total 2.096 deg 

ibex_rotate -o -u -0.971082,-0.214857,-0.104095 -w ibex-sun -t 2013/10:13:17:47:32 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.971082,-0.214857,-0.104095 
which is R.A. +192.476 Decl. -5.975 
missing R.A. +198.834 Decl. -7.961 (ibex-sun) 
error is R.A. +6.358 Decl. +1.986 
for a total 6.616 deg 

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 223 apogee: 

ibex_rotate -o -u -0.948643,-0.286141,-0.134903 -w ibex-sun -t 2013/10:13:20:02:57 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.948643,-0.286141,-0.134903 
which is R.A. +196.785 Decl. -7.753 
missing R.A. +198.923 Decl. -7.996 (ibex-sun) 
error is R.A. +2.138 Decl. +0.243 
for a total 2.132 deg 

ibex_rotate -o -u -0.948643,-0.286141,-0.134903 -w ibex-sun -t 2013-10-18T20:27:21.816Z 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.948643,-0.286141,-0.134903 
which is R.A. +196.785 Decl. -7.753 
missing R.A. +203.466 Decl. -9.830 (ibex-sun) 
error is R.A. +6.681 Decl. +2.077 
for a total 6.921 deg 

No Lo O-mode. 

There is no overlap with orbit 221 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: "Ibex Mission Operations" <ibexops at gmail.com> 
To: joe at boulder.swri.edu, "IBEX-FDG" <IBEX.fdg at applieddefense.com>, "IBEXOPS/ORB" <IBEXops at orbital.com>, "ISOC at New Hampshire" <isocops at lists.sr.unh.edu>, "John Cavallo" <cavallo.john at orbital.com>, "Ken Fairchild" <fair-play at comcast.net>, "Mark Tapley" <mtapley at swri.edu>, "Nigel Angold" <ngangold at earthlink.net>, "Robert Lockwood" <Lockwood.Robert at Orbital.com>, "Roland Vanderspek" <roland at space.mit.edu>, "Ryan Tyler" <tyler.ryan at orbital.com>, "Sheral Wesley" <wesley.sheral at orbital.com>, "Thomas Regiec" <regiec.thomas at orbital.com>, "Tim Perry" <perry.tim at orbital.com> 
Sent: Saturday, September 21, 2013 8:05:39 AM 
Subject: IBEX Orbit# 222 ATS (4 Oct 13 - 14 Oct 13) 

Guys, 
Here are the planning files and ATS for Orbit# 222. 
Please respond to this email thread with your comments and approvals. 
All comments and approvals are required before 23 Sept 13 @ 2200 UTC 

Note the following: 
1. No battery balancing commands 
2. Moon in Lo FOV 
# Orbit# 222 APOGEE: Moon in Lo FOV 
# 2013-10-12T23:27:33.092Z,MoonInLoFovStart,orbit:222 
# 2013-10-13T11:56:46.966Z,MoonInLoFovStop,orbit:222 
3. Command Load Constraint Violation Report (CCVR) 
IBEX_2013_277_o0222a_v001.scr 
========================== 
HARD CONSTRAINT VIOLATIONS 
========================== 
NO VIOLATIONS. 
========================== 
SOFT CONSTRAINT VIOLATIONS 
========================== 
NO VIOLATIONS. 
============== 
OTHER MESSAGES 
============== 
NO MESSAGES. 

-- 
Sheral R. Wesley 
SPVR., Satellite Operations 
IBEX Mission OPS 
(304) 279-6678 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.sr.unh.edu/mailman/private/isocops/attachments/20130923/ab3620bc/attachment-0001.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IBEX-Command-Approval-Checklist-Rev12a-o0222_KWF.doc
Type: application/msword
Size: 84480 bytes
Desc: not available
Url : http://lists.sr.unh.edu/mailman/private/isocops/attachments/20130923/ab3620bc/IBEX-Command-Approval-Checklist-Rev12a-o0222_KWF-0001.doc 