[Isocops] IBEX Orbit# 136a ATS v001 - approve.
Mark Tapley
mtapley at swri.edu
Tue Aug 2 19:03:01 EDT 2011
All,
I have looked at the Orbit 136a ATS v001
IBEX_2011_226_o0136a_v001.txt
and I approve.
No constraint violations.
The PL commands in the ATS v001 match the STF v001 file
IBEX_2011_225_o0136a_v001.stf
per Ken's script (Thanks, Ken!).
PL ascending and descending operations make sense with
respect to 15 Re ascending, Apogee, and 15 Re descending times from
IBEX_2011_226_o0136a_v001.oef
Moon in -Lo FOV PMT setback commands are a little strange
again. The .oef says we need them
2011-08-16T10:28:51.710Z - 2011-08-17T05:07:31.653Z
The STF has them
2011/08:17:02:04:55 - 2011/08:17:20:51:31
which periods overlap, but are not concentric or identical.
In any case, I think the danger to -Lo is small from having Moon in
FOV.
No ground station contact times sent; commands in ATS look OK
assuming the ground contact times match.
Battery cell balancing Cycle looks OK, > 1 hour from anything
(in a star tracker outage, but that is not relevant).
Sun Acq maneuver at the end of orbit 135 left us pointing in
a safe direction for ascending and descending macros during first
half of orbit (even safer than the usual inertial maneuver):
[tapley at ena ~]$ ibex_rotate -o -u 1,0,0 -w ibex-sun -t 2011/08:13:23:46:21
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +1.000000,+0.000000,+0.000000
which is R.A. +0.000 Decl. +0.000
missing R.A. +143.132 Decl. +14.572 (ibex-sun)
error is R.A. +143.132 Decl. +14.572
for a total 140.740 deg
[tapley at ena ~]$ ibex_rotate -o -r 143.132 -d 14.572 -w ibex-sun -t
2011/08:14:17:02:32
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.774285,+0.580674,+0.251596
which is R.A. +143.132 Decl. +14.572
missing R.A. +143.764 Decl. +14.385 (ibex-sun)
error is R.A. +0.632 Decl. +0.187
for a total 0.639 deg
[tapley at ena ~]$ ibex_rotate -o -r 143.132 -d 14.572 -w ibex-sun -t
2011/08:18:05:23:24
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.774285,+0.580674,+0.251596
which is R.A. +143.132 Decl. +14.572
missing R.A. +147.075 Decl. +13.232 (ibex-sun)
error is R.A. +3.943 Decl. +1.340
for a total 4.055 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 -0.797775,0.557986,0.228487 -w
ibex-sun -t 2011/08:18:06:55:12
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.797775,+0.557986,+0.228487
which is R.A. +145.030 Decl. +13.208
missing R.A. +147.135 Decl. +13.211 (ibex-sun)
error is R.A. +2.105 Decl. +0.003
for a total 2.049 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.797775,0.557986,0.228487 -w
ibex-sun -t 2011/08:18:08:42:18
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.797775,+0.557986,+0.228487
which is R.A. +145.030 Decl. +13.208
missing R.A. +147.205 Decl. +13.186 (ibex-sun)
error is R.A. +2.175 Decl. +0.022
for a total 2.118 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.797775,0.557986,0.228487 -w
ibex-sun -t 2011/08:22:17:17:03
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.797775,+0.557986,+0.228487
which is R.A. +145.030 Decl. +13.208
missing R.A. +151.269 Decl. +11.755 (ibex-sun)
error is R.A. +6.239 Decl. +1.453
for a total 6.262 deg
Maneuver at perigee leaves us pointing in a safe direction at
maneuver and at following Apogee.
[tapley at ena ~]$ ibex_rotate -o -u -0.841601,0.500501,0.202992 -w
ibex-sun -t 2011/08:22:23:26:38
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.841601,+0.500501,+0.202992
which is R.A. +149.260 Decl. +11.712
missing R.A. +151.496 Decl. +11.682 (ibex-sun)
error is R.A. +2.236 Decl. +0.030
for a total 2.190 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.841601,0.500501,0.202992 -w
ibex-sun -t 2011-08-27T19:06:09.348Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.841601,+0.500501,+0.202992
which is R.A. +149.260 Decl. +11.712
missing R.A. +155.888 Decl. +10.011 (ibex-sun)
error is R.A. +6.628 Decl. +1.701
for a total 6.727 deg
No O-mode this orbit.
No overlaps to orbit 135, either manual check or per
http://ibex.unh.edu/cgi-bin/ats.cgi.
Command Approval Checklist attached.
At 7:33 -0400 8/1/11, Ibex Mission Operations wrote:
>Guys,
> Here is the ATS for Orbit#136 along with the planning files.
>The SFTP server is still down and I will place the files there as
>soon as I can.
> I will also email my approval check list later this morning
--
- Mark 210-379-4635
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