[Isocops] IBEX Orbit# 210 ATS (18 June 13 - 27 June 13) - v001 approval

Thu Jun 6 14:44:53 EDT 2013

All, 

I have looked at the orbit 210 ATS, 

IBEX_2013_169_o0210a_v001.scr, 

and I approve. 

There are no constraint violations in 

IBEX_2013_169_o0210a_v001.ccvr. 

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

IBEX_2013_169_o0210a_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 file, 

IBEX_2013_169_o0210a_v001.oef, 

and as verified with ibex_orbit. 

There are two star tracker outages. The first starts about 2 days after apogee and runs for about a day and a half. The second starts about 1 1/2 hours after the perigee maneuver and runs for about 6 1/2 hours. 

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_Orbit210Contacts.txt, 

for all contacts (3). 

No battery cell balancing this orbit; we'll be doing it in the next orbit. 

The inertial maneuver at perigee of orbit 209 left us pointing in safe directions for orbit 210 arc A ascending and descending sequences: 

ibex_rotate -o -u 0.089936,0.91773,0.386888 -w ibex-sun -t 2013/06:18:19:03:37 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI +0.089936,+0.917730,+0.386888 
which is R.A. +84.403 Decl. +22.761 
missing R.A. +87.262 Decl. +23.413 (ibex-sun) 
error is R.A. +2.859 Decl. +0.652 
for a total 2.710 deg 

ibex_rotate -o -u 0.089936,0.91773,0.386888 -w ibex-sun -t 2013/06:22:05:32:57 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI +0.089936,+0.917730,+0.386888 
which is R.A. +84.403 Decl. +22.761 
missing R.A. +90.943 Decl. +23.402 (ibex-sun) 
error is R.A. +6.540 Decl. +0.641 
for a total 6.050 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 0.017609,0.921275,0.388513 -w ibex-sun -t 2013/06:22:07:16:05 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI +0.017609,+0.921275,+0.388513 
which is R.A. +88.905 Decl. +22.862 
missing R.A. +91.019 Decl. +23.402 (ibex-sun) 
error is R.A. +2.114 Decl. +0.540 
for a total 2.018 deg 

ibex_rotate -o -u 0.017609,0.921275,0.388513 -w ibex-sun -t 2013/06:22:08:51:11 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI +0.017609,+0.921275,+0.388513 
which is R.A. +88.905 Decl. +22.862 
missing R.A. +91.089 Decl. +23.401 (ibex-sun) 
error is R.A. +2.184 Decl. +0.539 
for a total 2.079 deg 

ibex_rotate -o -u 0.017609,0.921275,0.388513 -w ibex-sun -t 2013/06:26:14:25:14 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI +0.017609,+0.921275,+0.388513 
which is R.A. +88.905 Decl. +22.862 
missing R.A. +95.428 Decl. +23.343 (ibex-sun) 
error is R.A. +6.523 Decl. +0.481 
for a total 6.018 deg 

The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 211 apogee: 

ibex_rotate -o -u -0.056446,0.919984,0.38787 -w ibex-sun -t 2013/06:26:16:23:34 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.056446,+0.919984,+0.387870 
which is R.A. +93.511 Decl. +22.822 
missing R.A. +95.506 Decl. +23.342 (ibex-sun) 
error is R.A. +1.995 Decl. +0.520 
for a total 1.907 deg 

ibex_rotate -o -u -0.056446,0.919984,0.38787 -w ibex-sun -t 2013-07-01T12:18:54.129Z 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.056446,+0.919984,+0.387870 
which is R.A. +93.511 Decl. +22.822 
missing R.A. +100.564 Decl. +23.049 (ibex-sun) 
error is R.A. +7.053 Decl. +0.227 
for a total 6.498 deg 

No Lo O-mode. 

There is no overlap with orbit 209 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: "Bret Hautamaki" <hautamaki.bret at orbital.com>, "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>, "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: Wednesday, June 5, 2013 9:25:16 AM 
Subject: [Isocops] IBEX Orbit# 210 ATS (18 June 13 - 27 June 13) 

Guys, 
Here are the planning files and ATS for Orbit# 210. Please respond to this email thread with all comments/approvals. 
Your comments/approvals are required before 8 June 13 @1300 UTC 

Note the following: 
1. Hi negative collimator voltage set to 1400 
2. Command Constraint Violations: 
# IBEX_2013_169_o0210a_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 

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