[Isocops] IBEX ORbit# 202 ATS (6 Apr 13 - 15 Apr 13) - v001 approve
fair-play at comcast.net
fair-play at comcast.net
Tue Mar 26 14:43:35 EDT 2013
All,
I've looked at the orbit 202 ATS,
IBEX_2013_096_o0202a_v001.scr,
and I approve.
There are no constraint violations in
IBEX_2013_096_o0202a_v001.ccvr.
The PL commands in the v001 ATS match those in the STF,
IBEX_2013_096_o0202a_v001.stf,
except that the ATS has an SSR_DUMP_NEW command. However, this is expected as APL is being used for the dump pass.
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_096_o0202a_v001.oef,
and as verified with ibex_orbit.
There is a star tracker outage that starts 2+ days after apogee and runs for 1.5+ days.
There are no moon in Lo FOV sessions in this orbit.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file,
IBEX_Orbit202Contacts.txt,
for all contacts (4). (The APL contact starts at 2K and switches to 320K as specified in the contacts file.)
No battery cell balancing this orbit; we'll be doing it again next orbit.
The inertial maneuver at perigee of orbit 201 left us pointing in safe directions for orbit 202 arc A ascending and descending sequences:
ibex_rotate -o -u 0.967472,0.235916,0.091328 -w ibex-sun -t 2013/04:07:07:32:52
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.967472,+0.235916,+0.091328
which is R.A. +13.704 Decl. +5.240
missing R.A. +16.121 Decl. +6.865 (ibex-sun)
error is R.A. +2.417 Decl. +1.625
for a total 2.901 deg
ibex_rotate -o -u 0.967472,0.235916,0.091328 -w ibex-sun -t 2013/04:10:21:59:20
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.967472,+0.235916,+0.091328
which is R.A. +13.704 Decl. +5.240
missing R.A. +19.506 Decl. +8.201 (ibex-sun)
error is R.A. +5.802 Decl. +2.961
for a total 6.478 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 0.944282,0.305814,0.121696 -w ibex-sun -t 2013/04:10:23:42:28
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.944282,+0.305814,+0.121696
which is R.A. +17.945 Decl. +6.990
missing R.A. +19.571 Decl. +8.227 (ibex-sun)
error is R.A. +1.626 Decl. +1.237
for a total 2.032 deg
ibex_rotate -o -u 0.944282,0.305814,0.121696 -w ibex-sun -t 2013/04:11:01:17:34
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.944282,+0.305814,+0.121696
which is R.A. +17.945 Decl. +6.990
missing R.A. +19.631 Decl. +8.251 (ibex-sun)
error is R.A. +1.686 Decl. +1.261
for a total 2.094 deg
ibex_rotate -o -u 0.944282,0.305814,0.121696 -w ibex-sun -t 2013/04:15:12:14:08
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.944282,+0.305814,+0.121696
which is R.A. +17.945 Decl. +6.990
missing R.A. +23.618 Decl. +9.854 (ibex-sun)
error is R.A. +5.673 Decl. +2.864
for a total 6.300 deg
The inertial maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 203 apogee:
ibex_rotate -o -u 0.915699,0.37259,0.150571 -w ibex-sun -t 2013/04:15:14:23:38
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.915699,+0.372590,+0.150571
which is R.A. +22.141 Decl. +8.660
missing R.A. +23.699 Decl. +9.887 (ibex-sun)
error is R.A. +1.558 Decl. +1.227
for a total 1.967 deg
ibex_rotate -o -u 0.915699,0.37259,0.150571 -w ibex-sun -t 2013-04-20T16:02:03.499Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.915699,+0.372590,+0.150571
which is R.A. +22.141 Decl. +8.660
missing R.A. +28.543 Decl. +11.667 (ibex-sun)
error is R.A. +6.402 Decl. +3.007
for a total 6.981 deg
No Lo O-mode.
There is no overlap with orbit 201 commands by manual inspection or by checking at
http://ibex.unh.edu/cgi-bin/ats.cgi .
The 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: Sunday, March 24, 2013 4:30:00 PM
Subject: [Isocops] IBEX ORbit# 202 ATS (6 Apr 13 - 15 Apr 13)
Guys,
Here are the planning files and ATS for Orbit# 202 (6 Apr 13 - 15 Apr 13)
All comments/approvals are required before 5 Apr 13 @1200 UTC
Please reply to this email thread with all comments/approvals.
Note the following:
1. No Battery Bakancing commands this orbit
2. 4 contacts this orbit
- APL-18 SSR Dump Contact on 15 Apr 13 @ 1800 UTC
3. No Moon in Lo FOV Commands
4. CCVR
# IBEX_2013_096_o0202a_v001.scr
==========================
HARD CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==========================
SOFT CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==============
OTHER 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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