[Isocops] IBEX Orbit# 191 ATS v002 - approve
Mark Tapley
mtapley at swri.edu
Fri Dec 14 15:25:35 EST 2012
All,
I have looked at the Orbit 191 ATS v002
IBEX_2012_361_o0191a_v002.txt
and I approve.
No constraint violation per .ccvr file:
IBEX_2012_361_o191a_v001.ccvr
The PL commands in the ATS v002 file match those in the STF
IBEX_2012_361_o0191a_v001.stf
according to Ken's script (thanks!).
PL ascending and descending operations make sense with
respect to each other and to 15 Re ascending, Apogee, and 15 Re
descending times from
IBEX_2012_352_o0191a_v001.oef
Star tracker outage for first 2 days and 7 hours of first arc
ascending science operations and SSR dump pass; should not affect
ramp-up but may require de-spinning.
Moon in -LO FOV during descending arc; ATS commands are 3
hours early start and just right end compared to .oef start and end
times for an 8 hour eclipse, which is about normal.
Ground station contact commands match contact times in Contacts file
IBEX_2011_Orbit191_v002.caf
for all 3 contacts. (Note .caf file name is odd, saying 2011
vs. 2012, but events match up.)
Battery cell balancing this orbit. Should do next orbit as
well. Second command is FALSE, 1.5 hours after first command, not
near any other event.
Inertial maneuver at the end of orbit 190 left us pointing in
extra safe directions for ascending and descending macros during
first half of orbit:
[tapley at ena ~]$ ibex_rotate -o -u 0.069022,-0.911368,-0.405764 -w
ibex-sun -t 2012/12:26:19:18:37
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.069022,-0.911368,-0.405764
which is R.A. +274.331 Decl. -23.939
missing R.A. +275.753 Decl. -23.329 (ibex-sun)
error is R.A. +1.422 Decl. +0.610
for a total 1.438 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.069022,-0.911368,-0.405764 -w
ibex-sun -t 2012/12:30:09:31:45
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.069022,-0.911368,-0.405764
which is R.A. +274.331 Decl. -23.939
missing R.A. +279.624 Decl. -23.175 (ibex-sun)
error is R.A. +5.293 Decl. +0.764
for a total 4.911 deg
Inertial maneuver at apogee leaves us pointing in an extra
safe direction at maneuver and at following Ascending and Descending
Macros.
[tapley at ena ~]$ ibex_rotate -o -u 0.178145,-0.898709,-0.400733 -w
ibex-sun -t 2012/12:30:11:14:53
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.178145,-0.898709,-0.400733
which is R.A. +281.212 Decl. -23.624
missing R.A. +279.702 Decl. -23.171 (ibex-sun)
error is R.A. +1.510 Decl. +0.453
for a total 1.458 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.178145,-0.898709,-0.400733 -w
ibex-sun -t 2012/12:30:12:49:59
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.178145,-0.898709,-0.400733
which is R.A. +281.212 Decl. -23.624
missing R.A. +279.774 Decl. -23.167 (ibex-sun)
error is R.A. +1.438 Decl. +0.457
for a total 1.397 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.178145,-0.898709,-0.400733 -w
ibex-sun -t 2013/01:03:22:01:38
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.178145,-0.898709,-0.400733
which is R.A. +281.212 Decl. -23.624
missing R.A. +284.656 Decl. -22.758 (ibex-sun)
error is R.A. +3.444 Decl. +0.866
for a total 3.282 deg
Inertial maneuver at perigee leaves us pointing in an extra
safe direction at maneuver and at following Apogee.
[tapley at ena ~]$ ibex_rotate -o -u 0.286518,-0.875,-0.390233 -w
ibex-sun -t 2013/01:04:05:16:04
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.286518,-0.875000,-0.390233
which is R.A. +288.131 Decl. -22.969
missing R.A. +285.015 Decl. -22.717 (ibex-sun)
error is R.A. +3.116 Decl. +0.252
for a total 2.883 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.286518,-0.875,-0.390233 -w
ibex-sun -t 2013-01-08T21:50:54.487Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.286518,-0.875000,-0.390233
which is R.A. +288.131 Decl. -22.969
missing R.A. +290.087 Decl. -22.188 (ibex-sun)
error is R.A. +1.956 Decl. +0.781
for a total 1.967 deg
No -Lo O-mode Commands.
No overlap to orbit 190 commands apparent by manual check or
by reference to http://ibex.unh.edu/cgi-bin/ats.cgi .
Command Approval Checklist attached.
-Hi Neg collimator back to operating at nominal voltage.
Pointing is in -Lo ISM mode operations during January, so sun
angles are lower and will continue to be lower through January.
At 16:03 -0500 12/13/12, IBEX wrote:
>All,
> Attached are the products for Orbit #191. Questions and/or
>signed off check lists need to be completed By Noon on Dec 16.
> Thanks
> Tim
At 12:38 -0500 12/14/12, IBEX wrote:
>All,
> Attached is version 2 of the 191 ATS. Added is battery balancing
>
># Battery Balancing from 2013 Jan 4 10:00:00 - 11:30:00
> @ECT_SetLongEclipseFlag TRUE $TIME=2013/01:04:10:00:00
> @ECT_SetLongEclipseFlag FALSE $TIME=2013/01:04:11:30:00
--
- Mark 210-379-4635
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