[Isocops] IBEX Orbit# 208 ATS (31 May 13 - 09 June 13) - v002 approval
fair-play at comcast.net
fair-play at comcast.net
Sun May 19 16:12:42 EDT 2013
All,
I have looked at the orbit 208 ATS,
IBEX_2013_151_o0208a_v002.scr,
and I approve.
There are no constraint violations in
IBEX_2013_151_o0208a_v001.ccvr.
The PL commands in the v002 ATS match those in the v002 STF,
IBEX_2013_151_o0208a_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_151_o0208a_v001.oef,
and as verified with ibex_orbit.
There is one star tracker outage. It starts about 2 hours before 15 Re descending and ends about 6 hours after the maneuver window opens (thus delaying the perigee maneuver).
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_Orbit208Contacts.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 207 left us pointing in safe directions for orbit 208 arc A ascending and descending sequences:
ibex_rotate -o -u 0.378243,0.853272,0.358971 -w ibex-sun -t 2013/05:31:23:13:32
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.378243,+0.853272,+0.358971
which is R.A. +66.093 Decl. +21.037
missing R.A. +68.839 Decl. +22.013 (ibex-sun)
error is R.A. +2.746 Decl. +0.976
for a total 2.734 deg
ibex_rotate -o -u 0.378243,0.853272,0.358971 -w ibex-sun -t 2013/06:04:09:56:39
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.378243,+0.853272,+0.358971
which is R.A. +66.093 Decl. +21.037
missing R.A. +72.495 Decl. +22.430 (ibex-sun)
error is R.A. +6.402 Decl. +1.393
for a total 6.107 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 0.309383,0.876391,0.369082 -w ibex-sun -t 2013/06:04:11:39:47
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.309383,+0.876391,+0.369082
which is R.A. +70.556 Decl. +21.659
missing R.A. +72.569 Decl. +22.438 (ibex-sun)
error is R.A. +2.013 Decl. +0.779
for a total 2.022 deg
ibex_rotate -o -u 0.309383,0.876391,0.369082 -w ibex-sun -t 2013/06:04:13:14:53
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.309383,+0.876391,+0.369082
which is R.A. +70.556 Decl. +21.659
missing R.A. +72.638 Decl. +22.445 (ibex-sun)
error is R.A. +2.082 Decl. +0.786
for a total 2.084 deg
ibex_rotate -o -u 0.309383,0.876391,0.369082 -w ibex-sun -t 2013/06:08:19:23:07
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.309383,+0.876391,+0.369082
which is R.A. +70.556 Decl. +21.659
missing R.A. +76.937 Decl. +22.894 (ibex-sun)
error is R.A. +6.381 Decl. +1.235
for a total 6.032 deg
The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 209 apogee:
ibex_rotate -o -u 0.237743,0.89514,0.377097 -w ibex-sun -t 2013/06:09:04:04:03
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.237743,+0.895140,+0.377097
which is R.A. +75.126 Decl. +22.154
missing R.A. +77.281 Decl. +22.928 (ibex-sun)
error is R.A. +2.155 Decl. +0.774
for a total 2.135 deg
ibex_rotate -o -u 0.237743,0.89514,0.377097 -w ibex-sun -t 2013-06-13T19:29:45.317Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.237743,+0.895140,+0.377097
which is R.A. +75.126 Decl. +22.154
missing R.A. +82.212 Decl. +23.211 (ibex-sun)
error is R.A. +7.086 Decl. +1.057
for a total 6.622 deg
No Lo O-mode.
There is no overlap with orbit 207 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: "Ibex Mission Operations" <ibexops at gmail.com>
Cc: "Thomas Regiec" <regiec.thomas at orbital.com>, "IBEX-FDG" <IBEX.fdg at applieddefense.com>, "ISOC at New Hampshire" <isocops at lists.sr.unh.edu>, "Bret Hautamaki" <hautamaki.bret at orbital.com>, "John Cavallo" <cavallo.john at orbital.com>, "Robert Lockwood" <Lockwood.Robert at orbital.com>, "Ryan Tyler" <tyler.ryan at orbital.com>, "Sheral Wesley" <wesley.sheral at orbital.com>, "IBEXOPS/ORB" <IBEXops at orbital.com>
Sent: Friday, May 17, 2013 3:34:48 PM
Subject: [Isocops] IBEX Orbit# 208 ATS (31 May 13 - 09 June 13)
All,
Here are the planning files and ATS for Orbit# 208.
Please respond to this email thread with approvals and comments. All
approvals and comments are
required before COB 20 May 13.
Please note the following:
No Battery balancing for this orbit
Special commands for Hi Neg Collimator voltage 1400
No Violations
==========================
HARD CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==========================
SOFT CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==============
OTHER MESSAGES
==============
NO MESSAGES.
(See attached file: IBEX_2013_151_o0208a_v001.ccvr)(See attached file:
IBEX_2013_151_o0208a_v001.oef)(See attached file:
IBEX_2013_151_o0208a_v001.txt)(See attached file:
IBEX_Orbit208Contacts.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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