[Isocops] IBEX Orbit# 211 ATS (27 June 13 - 5 June 13) - v001 approval
fair-play at comcast.net
fair-play at comcast.net
Sat Jun 15 00:36:20 EDT 2013
All,
I have looked at the orbit 211 ATS,
IBEX_2013_178_o0211a_v001.scr,
and I approve.
There are no constraint violations in
IBEX_2013_178_o0211a_v001.ccvr .
The PL commands in the v001 ATS match those in the v002 STF,
IBEX_2013_178_o0211a_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_178_o0211a_v001.oef,
and as verified with ibex_orbit.
There is one star tracker outage. It starts about three hours after the perigee maneuver and runs for about 5 1/2 hours.
There is one moon in Lo FOV session in arc A. The ATS start time is about 3 3/4 hours after that in the OEF and the ATS end time is about 1 3/4 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_Orbit211Contacts.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 210 left us pointing in safe directions for orbit 211 arc A ascending and descending sequences:
ibex_rotate -o -u -0.056446,0.919984,0.38787 -w ibex-sun -t 2013/06:27:14:21:07
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. +96.405 Decl. +23.306 (ibex-sun)
error is R.A. +2.894 Decl. +0.484
for a total 2.706 deg
ibex_rotate -o -u -0.056446,0.919984,0.38787 -w ibex-sun -t 2013/07:01:00:44:43
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. +100.057 Decl. +23.083 (ibex-sun)
error is R.A. +6.546 Decl. +0.261
for a total 6.033 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 -0.128285,0.913833,0.385294 -w ibex-sun -t 2013/07:01:02:27:51
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.128285,+0.913833,+0.385294
which is R.A. +97.991 Decl. +22.662
missing R.A. +100.132 Decl. +23.078 (ibex-sun)
error is R.A. +2.141 Decl. +0.416
for a total 2.016 deg
ibex_rotate -o -u -0.128285,0.913833,0.385294 -w ibex-sun -t 2013/07:01:04:02:57
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.128285,+0.913833,+0.385294
which is R.A. +97.991 Decl. +22.662
missing R.A. +100.202 Decl. +23.074 (ibex-sun)
error is R.A. +2.211 Decl. +0.412
for a total 2.078 deg
ibex_rotate -o -u -0.128285,0.913833,0.385294 -w ibex-sun -t 2013/07:05:09:58:08
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.128285,+0.913833,+0.385294
which is R.A. +97.991 Decl. +22.662
missing R.A. +104.546 Decl. +22.763 (ibex-sun)
error is R.A. +6.555 Decl. +0.101
for a total 6.047 deg
The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 212 apogee:
ibex_rotate -o -u -0.201671,0.902596,0.380328 -w ibex-sun -t 2013/07:05:11:55:17
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. +104.623 Decl. +22.757 (ibex-sun)
error is R.A. +2.028 Decl. +0.403
for a total 1.916 deg
ibex_rotate -o -u -0.201671,0.902596,0.380328 -w ibex-sun -t 2013-07-10T09:55:14.498Z
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. +109.697 Decl. +22.169 (ibex-sun)
error is R.A. +7.102 Decl. +0.185
for a total 6.575 deg
No Lo O-mode.
There is no overlap with orbit 210 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: Thursday, June 13, 2013 10:41:19 PM
Subject: [Isocops] IBEX Orbit# 211 ATS (27 June 13 - 5 June 13)
Guys,
Here are the planning files and ATS for Orbit# 211.
Please respond to this email thread with all comments and approvals.
All comments and approvals are required before 17 June 13 @ 1000 UTC.
Please note the following:
1. Battery Balancing at PERIGEE
# 2013-07-05T21:56:36.134Z,Perigee,orbit:211
2. Moon in Lo FOV COmmands
# 2013-06-27T19:12:40.161Z,MoonInLoFovStart,orbit:211
# 2013-06-28T07:57:13.152Z,MoonInLoFovStop,orbit:211
--
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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