[Isocops] IBEX Orbit# 168 ATS v001 - approve
Mark Tapley
mtapley at swri.edu
Fri May 18 13:06:32 EDT 2012
All,
I have looked at the Orbit 168 ATS v001
IBEX_2012_152_o0168a_v001.txt
and I approve.
No constraint violations per .ccvr file:
IBEX_2012_152_o0168a_v001.ccvr
The PL commands in the ATS v001 match the STF v001
IBEX_2012_152_o0168a_v001.stf
per Ken's script (thanks!).
PL ascending and descending operations make sense with
respect to 15 Re ascending, Apogee, and 15 Re descending times from
IBEX_2012_152_o0168a_v001.oef
Star tracker outages on June 6-7 during second arc and 8-9
during perigee descend do not affect maneuver windows.
Ground station contact times and rates per
IBEX_Orbit168Contacts_v001.txt
match S/C commands for all 3 contacts.
Battery cell balancing this orbit for 1.5 hours, ends with
Flag FALSE (as appropriate), and is more than an hour from anything.
Did this last orbit, should skip next orbit.
Inertial maneuver at the end of orbit 167 left us pointing in
a safe direction for ascending and descending macros during first
half of orbit:
[tapley at ena ~]$ ibex_rotate -o -u 0.376763,0.854882,0.356689 -w
ibex-sun -t 2012/05:31:19:12:13
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.376763,+0.854882,+0.356689
which is R.A. +66.216 Decl. +20.897
missing R.A. +68.943 Decl. +22.033 (ibex-sun)
error is R.A. +2.727 Decl. +1.136
for a total 2.781 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.376763,0.854882,0.356689 -w
ibex-sun -t 2012/06:04:07:44:28
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.376763,+0.854882,+0.356689
which is R.A. +66.216 Decl. +20.897
missing R.A. +72.678 Decl. +22.453 (ibex-sun)
error is R.A. +6.462 Decl. +1.556
for a total 6.203 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 0.306388,0.878245,0.367167 -w
ibex-sun -t 2012/06:04:09:32:18
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.306388,+0.878245,+0.367167
which is R.A. +70.768 Decl. +21.541
missing R.A. +72.756 Decl. +22.461 (ibex-sun)
error is R.A. +1.988 Decl. +0.920
for a total 2.060 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.306388,0.878245,0.367167 -w
ibex-sun -t 2012/06:04:11:03:22
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.306388,+0.878245,+0.367167
which is R.A. +70.768 Decl. +21.541
missing R.A. +72.821 Decl. +22.468 (ibex-sun)
error is R.A. +2.053 Decl. +0.927
for a total 2.117 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.306388,0.878245,0.367167 -w
ibex-sun -t 2012/06:08:19:18:18
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.306388,+0.878245,+0.367167
which is R.A. +70.768 Decl. +21.541
missing R.A. +77.197 Decl. +22.909 (ibex-sun)
error is R.A. +6.429 Decl. +1.368
for a total 6.106 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 0.233612,0.897109,0.374995 -w
ibex-sun -t 2012/06:09:03:21:30
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.233612,+0.897109,+0.374995
which is R.A. +75.404 Decl. +22.024
missing R.A. +77.517 Decl. +22.944 (ibex-sun)
error is R.A. +2.113 Decl. +0.920
for a total 2.158 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.233612,0.897109,0.374995 -w
ibex-sun -t 2012-06-13T20:16:10.318Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.233612,+0.897109,+0.374995
which is R.A. +75.404 Decl. +22.024
missing R.A. +82.520 Decl. +23.228 (ibex-sun)
error is R.A. +7.116 Decl. +1.204
for a total 6.677 deg
No -Lo O-mode Commands.
No overlap to orbit 167 commands apparent by manual check or
by reference to http://ibex.unh.edu/cgi-bin/ats.cgi .
Command Approval Checklist attached.
-Hi Neg collimator voltage back to operating at nominal voltage.
At 13:53 -0400 5/17/12, Ibex Mission Operations wrote:
>Guys,
> Here are the planning files and ATS for Orbit# 168.
>Please respond to this email thread with approvals/comments.
>All approvals/comments are due before 21 May 12 @ 0200 UTC
>
>NOTE the following:
>1. Battery Balancing commands
>2. 10 minute thruster enable time
--
- Mark 210-379-4635
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