[Isocops] IBEX Orbit# 210 ATS (18 June 13 - 27 June 13) - v001 approval
fair-play at comcast.net
fair-play at comcast.net
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
Please restrict discussions on this email list to non-ITAR sensitive topics.
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