[Isocops] IBEX Orbit# 181 ATS v001 (Hi/CEU and Lo) - approve - no contacts
Mark Tapley
mtapley at swri.edu
Mon Sep 17 11:31:52 EDT 2012
All,
I have looked at the Orbit 181 ATS v001 (No -Lo commands)
IBEX_2012_271_o0181a_v001.txt
and the corresponding -Lo command ATS
IBEX_2012_271_o0181a_Lo_Commands_v001.txt
and I approve.
No constraint violations per .ccvr file:
IBEX_2012_271_o0181a_v001.ccvr
-Lo-only load .ccvr
IBEX_2012_271_o0181a_Lo_Commands_v001.ccvr
has the expected violations due to lack of -Hi and CEU
commands in the -Lo alone load.
The PL commands in the ATS v001 match the STF v002
IBEX_2012_271_o0181a_v002.stf
per Ken's script (thanks!).
PL ascending and descending operations (-Hi/CEU and -Lo) make
sense with respect to 15 Re ascending, Apogee, and 15 Re descending
times from
IBEX_2012_271_o0181a_v001.oef
Star tracker outage on ascending arc ends before inertial
maneuver. Star tracker outage near perigee starts 5 hours after
inertial maneuver is complete.
Moon in -LO FOV for 3 days during descending arc. -Lo
commands this load include PMT set-back concentric with times in
.oef, inside by 3 hours at start and same time at end.
No Ground station contact commands or contacts file.
No battery cell balancing this orbit. Did this last 2 orbits,
should return next orbit.
Inertial maneuver at the end of orbit 180 left us pointing in
a safe direction for ascending and descending macros during first
half of orbit:
[tapley at ena ~]$ ibex_rotate -o -u -0.998937,-0.035564,-0.029317 -w
ibex-sun -t 2012/09:28:07:11:10
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.998937,-0.035564,-0.029317
which is R.A. +182.039 Decl. -1.680
missing R.A. +184.918 Decl. -2.126 (ibex-sun)
error is R.A. +2.879 Decl. +0.446
for a total 2.912 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.998937,-0.035564,-0.029317 -w
ibex-sun -t 2012/10:01:19:32:57
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.998937,-0.035564,-0.029317
which is R.A. +182.039 Decl. -1.680
missing R.A. +188.041 Decl. -3.505 (ibex-sun)
error is R.A. +6.002 Decl. +1.825
for a total 6.267 deg
Inertial maneuver at apogee leaves us pointing in a safe
direction at maneuver and at following Ascending and Descending
Macros.
[tapley at ena ~]$ ibex_rotate -o -u -0.99272,-0.104917,-0.05915 -w
ibex-sun -t 2012/10:01:21:16:45
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.992720,-0.104917,-0.059150
which is R.A. +186.033 Decl. -3.391
missing R.A. +188.107 Decl. -3.533 (ibex-sun)
error is R.A. +2.074 Decl. +0.142
for a total 2.075 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.99272,-0.104917,-0.05915 -w
ibex-sun -t 2012/10:01:22:51:51
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.992720,-0.104917,-0.059150
which is R.A. +186.033 Decl. -3.391
missing R.A. +188.168 Decl. -3.560 (ibex-sun)
error is R.A. +2.135 Decl. +0.168
for a total 2.137 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.99272,-0.104917,-0.05915 -w
ibex-sun -t 2012/10:06:07:49:31
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.992720,-0.104917,-0.059150
which is R.A. +186.033 Decl. -3.391
missing R.A. +192.249 Decl. -5.260 (ibex-sun)
error is R.A. +6.216 Decl. +1.869
for a total 6.473 deg
Inertial maneuver at perigee leaves us pointing in a safe
direction at maneuver and at following Apogee.
[tapley at ena ~]$ ibex_rotate -o -u -0.980255,-0.175987,-0.090163 -w
ibex-sun -t 2012/10:06:15:04:17
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.980255,-0.175987,-0.090163
which is R.A. +190.178 Decl. -5.173
missing R.A. +192.526 Decl. -5.368 (ibex-sun)
error is R.A. +2.348 Decl. +0.195
for a total 2.346 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.980255,-0.175987,-0.090163 -w
ibex-sun -t 2012-10-11T09:36:22.448Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.980255,-0.175987,-0.090163
which is R.A. +190.178 Decl. -5.173
missing R.A. +196.787 Decl. -7.173 (ibex-sun)
error is R.A. +6.609 Decl. +2.000
for a total 6.868 deg
No -Lo O-mode Commands.
No overlap to orbit 180 commands apparent by manual check;
http://ibex.unh.edu/cgi-bin/ats.cgi has a lot of commands interleaved
among various test loads and is not usable for confirming no-overlap
right now.
Command Approval Checklists attached.
-Hi Neg collimator voltage back to operating at nominal voltage.
At 13:35 -0400 9/16/12, Ibex Mission Operations wrote:
>Guys,
> Here are the planning files and ATS for Orbit# 181
>All comments/approvals are required by 17 Sept 12 @2200 UTC
>
>Please note the following:
>1. This ATS contains NO IBEX_Lo Commands. IBEX_Lo commands for
>Orbit# 181 will be uploaded later before 15_re Ascending
>2. All contact commands have been omitted to conserved time tagged
>command space onboard the spacecraft
>Contacts will be treated as Blind_acq contacts
>3. There are not battery balancing commands for this orbit
>4. Command Constraing Violations
At 13:41 -0400 9/16/12, Ibex Mission Operations wrote:
>Guys,
> Please review v001 of the IBEX_Lo commands for ORbit# 181
>Approvals are required by 21 Sept 12 @ 1500 UTC
>
>
>The following commands were changed to a value of (0) as per IBEX_Lo.
>The two commands are found within the ascending IBEX_Lo sections of the ATS
--
- Mark 210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
technology adequate to stop them:
Think of it as Evolution in Fast-Forward.
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