[Isocops] IBEX Orbit# 115 ATS - approve
Mark Tapley
mtapley at swri.edu
Wed Feb 16 17:54:43 EST 2011
All,
I have looked at the Orbit 115 ATS v001
(IBEX_2011_056_00_00_v001.txt) and I approve.
The standard "PL mode unknown at the beginning" constraint
violation is the only one.
The PL commands in the ATS v001 match the STF v002 file
(IBEX_2011_057_05_21_v002.stf) per Ken's script.
PL ascending and descending operations make sense WRT 15 Re
ascending and descending times.
Moon in -Lo FOV PMT setback commands are concentric with the
Forecast OEF MoonInLoFOV time and inside of it by irregular amounts,
but within normal experience (no worse than ~4 hours).
Ground station times match S/C times for all 4 contacts.
Battery cell balancing is > 1 hour from anything (good).
The sun-pointing maneuver this orbit is inertial burn.
Ibex_rotate says we are pointing in safe directions at burn time, at
the following 15 Re ascending, and at the following 15 Re descending
(NOTE: Descending time taken from IBEX_2011_Orbit111_v001.oef
which is very old, because the supplied .oef did not extend to
12-March):
[tapley at ena ~]$ ibex_rotate -o -u
0.9673928178486794,-0.2324483976329838,-0.10059263597624885 -w
ibex-sun -t 2011/03:05:11:29:58
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.967393,-0.232448,-0.100593
which is R.A. +346.489 Decl. -5.773
missing R.A. +345.613 Decl. -6.165 (ibex-sun)
error is R.A. +0.876 Decl. +0.392
for a total 0.955 deg
[tapley at ena ~]$ ibex_rotate -o -u
0.9673928178486794,-0.2324483976329838,-0.10059263597624885 -w
ibex-sun -t 2011-03-06T01:55:37.297Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.967393,-0.232448,-0.100593
which is R.A. +346.489 Decl. -5.773
missing R.A. +346.197 Decl. -5.893 (ibex-sun)
error is R.A. +0.292 Decl. +0.120
for a total 0.314 deg
[tapley at ena ~]$ ibex_rotate -o -u
0.9673928178486794,-0.2324483976329838,-0.10059263597624885 -w
ibex-sun -t 2011-03-12T16:48:49.196Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.967393,-0.232448,-0.100593
which is R.A. +346.489 Decl. -5.773
missing R.A. +352.294 Decl. -3.351 (ibex-sun)
error is R.A. +5.805 Decl. +2.422
for a total 6.273 deg
No more O-mode.
At 14:25 -0500 2/16/11, Ibex Mission Operations wrote:
>Guys,
> Here are the planning files and ATS for Orbit # 115.
>Please review/approve the ATS before COB 17Feb 11.
--
- Mark 210-379-4635
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