[Isocops] IBEX Orbit# 212 ATS (6 July 13 - 15 July 13) - v001 approval
fair-play at comcast.net
fair-play at comcast.net
Tue Jun 25 16:45:02 EDT 2013
All,
I have looked at the orbit 212 ATS,
IBEX_2013_186_o0212a_v001.scr,
and I approve.
There are no constraint violations in
IBEX_2013_186_o0212a_v001.ccvr.
The PL commands in the v001 ATS match those in the v002 STF,
IBEX_2013_186_o0212a_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_186_o0212a_v001.oef,
and as verified with ibex_orbit.
There is one star tracker outage. It starts about 4 1/2 hours after the perigee maneuver and runs for about 5 hours.
There are no moon in Lo FOV sessions (the short session seen in the OEF file is not even generated by the ISOC software).
The ground station command sequences are correct and the timing and bit rates match those in the contacts file,
IBEX_Orbit212Contacts.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 211 left us pointing in safe directions for orbit 212 arc A ascending and descending sequences:
ibex_rotate -o -u -0.201671,0.902596,0.380328 -w ibex-sun -t 2013/07:06:09:51:48
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.201671,+0.902596,+0.380328
which is R.A. +102.595 Decl. +22.354
missing R.A. +105.504 Decl. +22.671 (ibex-sun)
error is R.A. +2.909 Decl. +0.317
for a total 2.706 deg
ibex_rotate -o -u -0.201671,0.902596,0.380328 -w ibex-sun -t 2013/07:09:22:21:49
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.201671,+0.902596,+0.380328
which is R.A. +102.595 Decl. +22.354
missing R.A. +109.197 Decl. +22.232 (ibex-sun)
error is R.A. +6.602 Decl. +0.122
for a total 6.109 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 -0.273093,0.886545,0.373441 -w ibex-sun -t 2013/07:10:00:04:57
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.273093,+0.886545,+0.373441
which is R.A. +107.121 Decl. +21.928
missing R.A. +109.272 Decl. +22.222 (ibex-sun)
error is R.A. +2.151 Decl. +0.294
for a total 2.014 deg
ibex_rotate -o -u -0.273093,0.886545,0.373441 -w ibex-sun -t 2013/07:10:01:40:03
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.273093,+0.886545,+0.373441
which is R.A. +107.121 Decl. +21.928
missing R.A. +109.340 Decl. +22.214 (ibex-sun)
error is R.A. +2.219 Decl. +0.286
for a total 2.076 deg
ibex_rotate -o -u -0.273093,0.886545,0.373441 -w ibex-sun -t 2013/07:14:09:20:29
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.273093,+0.886545,+0.373441
which is R.A. +107.121 Decl. +21.928
missing R.A. +113.717 Decl. +21.647 (ibex-sun)
error is R.A. +6.596 Decl. +0.281
for a total 6.131 deg
The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 213 apogee:
ibex_rotate -o -u -0.345067,0.865093,0.364064 -w ibex-sun -t 2013/07:14:11:17:46
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.345067,+0.865093,+0.364064
which is R.A. +111.746 Decl. +21.350
missing R.A. +113.794 Decl. +21.637 (ibex-sun)
error is R.A. +2.048 Decl. +0.287
for a total 1.927 deg
ibex_rotate -o -u -0.345067,0.865093,0.364064 -w ibex-sun -t 2013-07-19T07:26:27.216Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.345067,+0.865093,+0.364064
which is R.A. +111.746 Decl. +21.350
missing R.A. +118.683 Decl. +20.789 (ibex-sun)
error is R.A. +6.937 Decl. +0.561
for a total 6.497 deg
No Lo O-mode.
There is no overlap with orbit 211 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: "Tim Perry" <Perry.Tim at orbital.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>
Cc: "Ibex Mission Operations" <ibexops at gmail.com>
Sent: Monday, June 24, 2013 9:00:36 AM
Subject: [Isocops] IBEX Orbit# 212 ATS (6 July 13 - 15 July 13)
All,
Here are the planning files and ATS for Orbit# 212.
Please respond to this email thread with all comments and approvals.
All comments and approvals are required before COB 25 June 13.
Please note the following:
Battery Balancing at PERIGEE
>>2013/07:14:21:00:00 - 2013/07:14:22:30:00
(See attached file: IBEX_Orbit212Contacts.txt)(See attached file:
IBEX_2013_186_o0212a_v001.ccvr)(See attached file:
IBEX_2013_186_o0212a_v001.oef)(See attached file:
IBEX_2013_186_o0212a_v001.txt)
Timothy E. Perry
IBEX Mission Ops Lead
perry.tim at orbital.com
Office: (703) 406-5976
Cell:(301) 606-1430
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