[Isocops] IBEX Orbit# 213 ATS (15 July 13 - 24 July 13) - v001 approval
fair-play at comcast.net
fair-play at comcast.net
Tue Jul 2 16:59:34 EDT 2013
All,
I have looked at the orbit 213 ATS,
IBEX_2013_195_o0213a_v001.scr,
and I approve.
There are no constraint violations in
IBEX_2013_195_o0213a_v001.ccvr.
The PL commands in the v001 ATS match those in the v002 STF,
IBEX_2013_195_o0213a_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_195_o0213a_v001.oef,
and as verified with ibex_orbit.
There is one star tracker outage. It starts about 12 1/2 hours before 15 Re descending and it ends about 10 hours after the perigee maneuver window opens (thus delaying the perigee maneuver).
There is one moon in Lo FOV session. It begins just before the descending sequence at the end of arc A and continues into arc B. The ATS start time is about 11 hours after that in the OEF and the ATS stop time is about 2 1/2 hours after that in the OEF. These differences are not unusual.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file,
IBEX_Orbit213 Contacts.docx,
for all contacts (3).
No battery cell balancing this orbit; we'll do it again in the next orbit.
The inertial maneuver at perigee of orbit 212 left us pointing in safe directions for orbit 213 arc A ascending and descending sequences:
ibex_rotate -o -u -0.345067,0.865093,0.364064 -w ibex-sun -t 2013/07:15:09:11:33
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. +114.653 Decl. +21.503 (ibex-sun)
error is R.A. +2.907 Decl. +0.153
for a total 2.710 deg
ibex_rotate -o -u -0.345067,0.865093,0.364064 -w ibex-sun -t 2013/07:18:19:53:20
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. +118.191 Decl. +20.878 (ibex-sun)
error is R.A. +6.445 Decl. +0.472
for a total 6.031 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 -0.411852,0.83999,0.353263 -w ibex-sun -t 2013/07:18:21:36:28
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.411852,+0.839990,+0.353263
which is R.A. +116.119 Decl. +20.687
missing R.A. +118.265 Decl. +20.865 (ibex-sun)
error is R.A. +2.146 Decl. +0.178
for a total 2.014 deg
ibex_rotate -o -u -0.411852,0.83999,0.353263 -w ibex-sun -t 2013/07:18:23:11:34
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.411852,+0.839990,+0.353263
which is R.A. +116.119 Decl. +20.687
missing R.A. +118.332 Decl. +20.853 (ibex-sun)
error is R.A. +2.213 Decl. +0.166
for a total 2.076 deg
ibex_rotate -o -u -0.411852,0.83999,0.353263 -w ibex-sun -t 2013/07:23:05:23:38
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.411852,+0.839990,+0.353263
which is R.A. +116.119 Decl. +20.687
missing R.A. +122.582 Decl. +20.066 (ibex-sun)
error is R.A. +6.463 Decl. +0.621
for a total 6.089 deg
The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 214 apogee:
ibex_rotate -o -u -0.478752,0.809462,0.339953 -w ibex-sun -t 2013/07:23:18:58:51
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.478752,+0.809462,+0.339953
which is R.A. +120.602 Decl. +19.874
missing R.A. +123.091 Decl. +19.967 (ibex-sun)
error is R.A. +2.489 Decl. +0.093
for a total 2.342 deg
ibex_rotate -o -u -0.478752,0.809462,0.339953 -w ibex-sun -t 2013-07-28T04:11:21.747Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.478752,+0.809462,+0.339953
which is R.A. +120.602 Decl. +19.874
missing R.A. +127.454 Decl. +18.957 (ibex-sun)
error is R.A. +6.852 Decl. +0.917
for a total 6.526 deg
No Lo O-mode.
There is no overlap with orbit 212 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>, "Ibex Mission Operations" <ibexops at gmail.com>
Sent: Monday, July 1, 2013 12:13:02 PM
Subject: [Isocops] IBEX Orbit# 213 ATS (15 July 13 - 24 July 13)
All,
Here are the planning files and ATS for Orbit# 213.
Please respond to this email thread with all comments and approvals.
All comments and approvals are required before COB 03 July 13.
Moon in FOV
2013-07-18T08:13:39.537Z,MoonInLoFovStart,orbit:213
2013-07-19T23:33:15.463Z,MoonInLoFovStop,orbit:213
Star Tracker Outage
2013-07-22T16:49:42.573Z,StarTrackerOutageStart,orbit:213,dueTo:overlap
2013-07-23T17:15:54.407Z,StarTrackerOutageStop,orbit:213,dueTo:overlap
# IBEX_2013_195_o0213a_v001.scr
==========================
HARD CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==========================
SOFT CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==============
OTHER MESSAGES
==============
NO MESSAGES.
(See attached file: IBEX_2013_195_o0213a_v001.ccvr)(See attached file:
IBEX_2013_195_o0213a_v001.docx)(See attached file:
IBEX_2013_195_o0213a_v001.oef)(See attached file: IBEX_Orbit213
Contacts.docx)
Timothy E. Perry
IBEX Mission Ops Lead
perry.tim at orbital.com
Office: (703) 406-5976
Cell:(301) 606-1430
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