[Isocops] IBEX Orbit# 142 ATS v001 - approve.
Mark Tapley
mtapley at swri.edu
Mon Sep 26 14:49:05 EDT 2011
All,
I have looked at the Orbit 142 ATS v001
IBEX_2011_280_o0142a_v001.txt
and I approve.
No constraint violations.
The PL commands in the ATS v001 match the STF v002 file
(including O-mode commands)
IBEX_2011_280_o0142a_v002.stf
per Ken's script.
PL ascending and descending operations make sense with
respect to 15 Re ascending, Apogee, and 15 Re descending times from
IBEX_2011_280_o0142a_v001.oef
No Moon in -Lo FOV PMT setback commands, and none needed.
Ground station contact times per
IBEX_Orbit142Contacts_v001.txt
match S/C commands for all 3 contacts.
Battery cell balancing takes place > 1 hour from anything.
Inertial maneuver at the end of orbit 141 left us pointing in
a safe direction for ascending and descending macros during first
half of orbit:
[tapley at ena ~]$ ibex_rotate -o -u -0.979575,-0.179008,-0.091589 -w
ibex-sun -t 2011/10:08:06:03:54
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.979575,-0.179008,-0.091589
which is R.A. +190.356 Decl. -5.255
missing R.A. +193.280 Decl. -5.676 (ibex-sun)
error is R.A. +2.924 Decl. +0.421
for a total 2.941 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.979575,-0.179008,-0.091589 -w
ibex-sun -t 2011/10:11:19:57:58
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.979575,-0.179008,-0.091589
which is R.A. +190.356 Decl. -5.255
missing R.A. +196.501 Decl. -7.050 (ibex-sun)
error is R.A. +6.145 Decl. +1.795
for a total 6.368 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 -0.961138,-0.24812,-0.121038 -w
ibex-sun -t 2011/10:11:21:29:46
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.961138,-0.248120,-0.121038
which is R.A. +194.475 Decl. -6.952
missing R.A. +196.560 Decl. -7.075 (ibex-sun)
error is R.A. +2.085 Decl. +0.123
for a total 2.073 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.961138,-0.24812,-0.121038 -w
ibex-sun -t 2011/10:11:23:16:52
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.961138,-0.248120,-0.121038
which is R.A. +194.475 Decl. -6.952
missing R.A. +196.629 Decl. -7.104 (ibex-sun)
error is R.A. +2.154 Decl. +0.152
for a total 2.144 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.961138,-0.24812,-0.121038 -w
ibex-sun -t 2011/10:16:10:17:38
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.961138,-0.248120,-0.121038
which is R.A. +194.475 Decl. -6.952
missing R.A. +200.868 Decl. -8.790 (ibex-sun)
error is R.A. +6.393 Decl. +1.838
for a total 6.593 deg
Maneuver at perigee leaves us pointing in a safe direction at
maneuver and at following Apogee.
[tapley at ena ~]$ ibex_rotate -o -u -0.935852,-0.318007,-0.15183 -w
ibex-sun -t 2011/10:16:17:29:43
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.935852,-0.318007,-0.151830
which is R.A. +198.768 Decl. -8.733
missing R.A. +201.151 Decl. -8.892 (ibex-sun)
error is R.A. +2.383 Decl. +0.159
for a total 2.360 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.935852,-0.318007,-0.15183 -w
ibex-sun -t 2011-10-21T14:05:59.246Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.935852,-0.318007,-0.151830
which is R.A. +198.768 Decl. -8.733
missing R.A. +205.585 Decl. -10.638 (ibex-sun)
error is R.A. +6.817 Decl. +1.905
for a total 6.984 deg
O-mode this orbit, from 2011/10:12:01:00:00 to
2011/10:16:08:00:00. ST outage ends well before this, at
2011-10-10T00:53:14.025Z, per the .oef.
No overlaps to orbit 141, manual check.
http://ibex.unh.edu/cgi-bin/ats.cgi did not seem to complete loading
in a finite time - it is a very very long screen by now.
Command Approval Checklist and O-mode Checklist attached.
Comet-viewing O-mode continues next orbit.
At 15:37 -0400 9/25/11, Ibex Mission Operations wrote:
>Guys,
> Here is the ATS and planning files for Orbit# 142.
>Orbit# 142 will be the first O-Mode Orbit. The commands can be
>found within the second half of the orbit (Arc-B)
>Approvals/comments are due by 1200 UTC 27 Sept 11
>Please send all responses to this email thread
--
- Mark 210-379-4635
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