[Isocops] IBEX Orbit# 233 ATS (13 Jan 14 - 22 Jan 14) - v001 approval
Reno, Michelle
mreno at swri.edu
Fri Jan 3 22:41:56 EST 2014
I approve IBEX_2014_013_o0233a_v001.scr,
On Jan 3, 2014, at 8:18 PM, "Ken Fairchild" <fair-play at comcast.net<mailto:fair-play at comcast.net>> wrote:
All,
I have looked at the orbit 233 ATS,
IBEX_2014_013_o0233a_v001.scr,
and I approve.
There are no constraint violations in
IBEX_2014_013_o0233a_v001.ccvr.
The PL commands in the v001 ATS match those in the v003 STF,
IBEX_2014_013_o0233a_v003.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_2014_013_o0233a_v001.oef,
and as verified with ibex_orbit.
The Hi ABAB command sequences and timing look reasonable.
There is one star tracker outage. It starts about 19 hours after 15 Re ascending and runs for 2+ days. Some despinning may be required due to this outage.
There are no moon in Lo FOV sessions.
The ground station command sequence is correct and the timing and bit rate match those in the contacts file,
IBEX_Orbit233Contacts.txt,
for the apogee contact. All other contacts will be blind acquisitions while we are doing Hi ABAB operations.
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 232 left us pointing in safe directions for orbit 233 arc A ascending and descending sequences:
ibex_rotate -o -u 0.411114,-0.793492,-0.448726 -w ibex-sun -t 2014/01:14:05:05:21
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.411114,-0.793492,-0.448726
which is R.A. +297.389 Decl. -26.662
missing R.A. +295.661 Decl. -21.348 (ibex-sun)
error is R.A. +1.728 Decl. +5.314
for a total 5.543 deg
ibex_rotate -o -u 0.411114,-0.793492,-0.448726 -w ibex-sun -t 2014/01:17:17:42:23
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.411114,-0.793492,-0.448726
which is R.A. +297.389 Decl. -26.662
missing R.A. +299.376 Decl. -20.731 (ibex-sun)
error is R.A. +1.987 Decl. +5.931
for a total 6.204 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 0.473242,-0.765049,-0.436739 -w ibex-sun -t 2014/01:17:19:25:31
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.473242,-0.765049,-0.436739
which is R.A. +301.740 Decl. -25.896
missing R.A. +299.451 Decl. -20.717 (ibex-sun)
error is R.A. +2.289 Decl. +5.179
for a total 5.589 deg
ibex_rotate -o -u 0.473242,-0.765049,-0.436739 -w ibex-sun -t 2014/01:17:21:00:37
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.473242,-0.765049,-0.436739
which is R.A. +301.740 Decl. -25.896
missing R.A. +299.520 Decl. -20.704 (ibex-sun)
error is R.A. +2.220 Decl. +5.192
for a total 5.578 deg
ibex_rotate -o -u 0.473242,-0.765049,-0.436739 -w ibex-sun -t 2014/01:22:05:06:34
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.473242,-0.765049,-0.436739
which is R.A. +301.740 Decl. -25.896
missing R.A. +304.107 Decl. -19.743 (ibex-sun)
error is R.A. +2.367 Decl. +6.153
for a total 6.528 deg
The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 234 apogee:
ibex_rotate -o -u 0.550214,-0.722809,-0.418105 -w ibex-sun -t 2014/01:22:07:03:11
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.550214,-0.722809,-0.418105
which is R.A. +307.279 Decl. -24.715
missing R.A. +304.197 Decl. -19.722 (ibex-sun)
error is R.A. +3.082 Decl. +4.993
for a total 5.750 deg
ibex_rotate -o -u 0.550214,-0.722809,-0.418105 -w ibex-sun -t 2014-01-27T03:15:50.681Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.550214,-0.722809,-0.418105
which is R.A. +307.279 Decl. -24.715
missing R.A. +309.279 Decl. -18.585 (ibex-sun)
error is R.A. +2.000 Decl. +6.130
for a total 6.405 deg
No Lo O-mode.
There is no overlap with orbit 232 commands by manual inspection or by checking at
http://ibex.unh.edu/cgi-bin/ats.cgi<https://urldefense.proofpoint.com/v1/url?u=http://ibex.unh.edu/cgi-bin/ats.cgi&k=PCy7eyfFfObklJZLFhSrcw%3D%3D%0A&r=XooAroO9usCVqglw4h5GLw%3D%3D%0A&m=wKHSvCsYd2FXW45ECScl%2BWSW37QUGha03ktwrm2oNPQ%3D%0A&s=10789d0765a1cf45f99a3f8b514fdecd5dd9ddf9eb81ca239dee5b069d2383f2>.
Command Approval Checklist is attached.
Ken
________________________________
From: "Ibex Mission Operations" <ibexops at gmail.com<mailto:ibexops at gmail.com>>
To: joe at boulder.swri.edu<mailto:joe at boulder.swri.edu>, "IBEX-FDG" <IBEX.fdg at applieddefense.com<mailto:IBEX.fdg at applieddefense.com>>, "IBEXOPS/ORB" <IBEXops at orbital.com<mailto:IBEXops at orbital.com>>, "ISOC at New Hampshire" <isocops at lists.sr.unh.edu<mailto:isocops at lists.sr.unh.edu>>, "John Cavallo" <cavallo.john at orbital.com<mailto:cavallo.john at orbital.com>>, "Ken Fairchild" <fair-play at comcast.net<mailto:fair-play at comcast.net>>, "Mark Tapley" <mtapley at swri.edu<mailto:mtapley at swri.edu>>, "Nigel Angold" <ngangold at earthlink.net<mailto:ngangold at earthlink.net>>, "Robert Lockwood" <Lockwood.Robert at Orbital.com<mailto:Lockwood.Robert at Orbital.com>>, "Roland Vanderspek" <roland at space.mit.edu<mailto:roland at space.mit.edu>>, "Ryan Tyler" <tyler.ryan at orbital.com<mailto:tyler.ryan at orbital.com>>, "Sheral Wesley" <wesley.sheral at orbital.com<mailto:wesley.sheral at orbital.com>>, "Thomas Regiec" <regiec.thomas at orbital.com<mailto:regiec.thomas at orbital.com>>, "Tim Perry" <perry.tim at orbital.com<mailto:perry.tim at orbital.com>>, "Ed Fleming" <Fleming.Ed at orbital.com<mailto:Fleming.Ed at orbital.com>>, "Harold Kucharek" <Harald.Kucharek at unh.edu<mailto:Harald.Kucharek at unh.edu>>, "Paul Janzen" <Paul.Janzen at mso.umt.edu<mailto:Paul.Janzen at mso.umt.edu>>
Sent: Thursday, January 2, 2014 4:53:24 PM
Subject: IBEX Orbit# 233 ATS (13 Jan 14 - 22 Jan 14)
Guys,
Here are the planning files and ATS for Orbit# 233.
Please respond to this email thread with your comments,questions and approvals.
All approvals are required before 4 Jan 14 @1400 UTC
Please note the following:
1. Battery Balancing at PERIGEE
SetLongEclipseFlag TRUE $TIME=2014/01:22:16:00:00
SetLongEclipseFlag FALSE $TIME=2014/01:22:17:30:00
2. Special Ops/Post-LUT Changes
Hi negative collimator voltage set to 1400
IBEX_Hi ABAB (CEM comparison)
3. Command Load Constraint Violation Report
IBEX_2014_013_o0233a_v001.scr
==========================
HARD CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==========================
SOFT CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==============
OTHER MESSAGES
==============
NO MESSAGES.
4. Only Apogee contacts commands are found within the ATS during IBEX_Hi ABAB Testing
--
Sheral R. Wesley
SPVR., Satellite Operations
IBEX Mission OPS
CYGNUS Mission Planning
(304) 279-6678
<IBEX-Command-Approval-Checklist-Rev12a-o0233_KWF.doc>
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