[Isocops] IBEX Orbit# 178 ATS v001 - approve - no contact or -Lo commands
Mark Tapley
mtapley at swri.edu
Mon Aug 20 10:40:00 EDT 2012
All,
I have looked at the Orbit 178 ATS v001 (No -Lo commands)
IBEX_2012_244_o0178a_v001.txt
and I approve.
No constraint violations per .ccvr file:
IBEX_2012_244_o0178a_v001.ccvr
The PL commands in the ATS v001 match the STF v002
IBEX_2012_244_o0178a_v002.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_244_o0178a_v001.oef
Star tracker outage near perigee does not affect inertial maneuver.
Moon in -LO FOV; No -Lo commands this load.
No Ground station contact commands, and no Contacts file.
No Battery cell balancing this orbit; Did this O177, need to
do this next orbit.
Sun-pointing maneuver at the end of orbit 177 left us
pointing in a safe direction for ascending and descending macros
during first half of orbit:
[tapley at ena ~]$ ibex_rotate -o -r +159.583 -d +8.602 -w ibex-sun -t
2012/08:31:01:44:55
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.926636,+0.344926,+0.149570
which is R.A. +159.583 Decl. +8.602
missing R.A. +159.583 Decl. +8.602 (ibex-sun)
error is R.A. +0.000 Decl. +0.000
for a total 0.001 deg
[tapley at ena ~]$ ibex_rotate -o -r +159.583 -d +8.602 -w ibex-sun -t
2012/08:31:18:28:05
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.926636,+0.344926,+0.149570
which is R.A. +159.583 Decl. +8.602
missing R.A. +160.158 Decl. +8.375 (ibex-sun)
error is R.A. +0.575 Decl. +0.227
for a total 0.612 deg
[tapley at ena ~]$ ibex_rotate -o -r +159.583 -d +8.602 -w ibex-sun -t
2012/09:04:08:34:36
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.926636,+0.344926,+0.149570
which is R.A. +159.583 Decl. +8.602
missing R.A. +163.395 Decl. +7.029 (ibex-sun)
error is R.A. +3.812 Decl. +1.573
for a total 4.091 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 -0.940397,0.316789,0.123688 -w
ibex-sun -t 2012/09:04:10:21:05
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.940397,+0.316789,+0.123688
which is R.A. +161.383 Decl. +7.105
missing R.A. +163.462 Decl. +7.001 (ibex-sun)
error is R.A. +2.079 Decl. +0.104
for a total 2.066 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.940397,0.316789,0.123688 -w
ibex-sun -t 2012/09:04:11:53:30
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.940397,+0.316789,+0.123688
which is R.A. +161.383 Decl. +7.105
missing R.A. +163.521 Decl. +6.976 (ibex-sun)
error is R.A. +2.138 Decl. +0.129
for a total 2.126 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.940397,0.316789,0.123688 -w
ibex-sun -t 2012/09:08:22:14:54
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.940397,+0.316789,+0.123688
which is R.A. +161.383 Decl. +7.105
missing R.A. +167.584 Decl. +5.319 (ibex-sun)
error is R.A. +6.201 Decl. +1.786
for a total 6.418 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 -0.964215,0.248035,0.093639 -w
ibex-sun -t 2012/09:09:05:21:09
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.964215,+0.248035,+0.093639
which is R.A. +165.574 Decl. +5.373
missing R.A. +167.842 Decl. +5.219 (ibex-sun)
error is R.A. +2.268 Decl. +0.154
for a total 2.264 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.964215,0.248035,0.093639 -w
ibex-sun -t 2012-09-14T01:47:42.091Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.964215,+0.248035,+0.093639
which is R.A. +165.574 Decl. +5.373
missing R.A. +172.124 Decl. +3.363 (ibex-sun)
error is R.A. +6.550 Decl. +2.010
for a total 6.833 deg
No -Lo O-mode (or any) Commands.
No overlap to orbit 177 commands apparent by manual check or
by reference to http://ibex.unh.edu/cgi-bin/ats.cgi although -Lo star
sensor commands for o177 are intermingled with normal commands for
this orbit.
Command Approval Checklist coming later.
-Hi Neg collimator voltage back to operating at nominal voltage.
At 10:24 -0400 8/17/12, Ibex Mission Operations wrote:
>Guys,
> Here are the planning files and ATS for Orbit# 178.
>All approvals/comments are required before 20 Aug 12 @1400 UTC
>Please note the following:
>1. Orbit# 178 OEF
>- the OEF from Orbit# 176 was used to generate the file because of
>the sun maneuver at PERIGEE of Orbit# 177
>
>2. IBEX_Lo and Moon in FOV commands have been deleted within the STF
>(Ken Fairchild)
>- IBEX_Lo Recovery starts in Orbit# 177
>- IBEX_Lo Star Sensor ATS for Orbit# 178 will be generated upon recovery
>
>3. Contact Commands
>- all contacts will remain as Blind_Acqs until we have recovered
>IBEX_Lo to optimize stored command space within the FC
--
- Mark 210-379-4635
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