[Isocops] IBEX Orbit# 195 ATS v002 - approve
Mark Tapley
mtapley at swri.edu
Fri Jan 18 17:17:01 EST 2013
All,
I have looked at the Orbit 195 ATS v002
IBEX_2013_031_o0195a_v002.txt
and the -Lo no-filter ATS
IBEX_2013_031_o0195a_TOFnofilter_v001.txt
and I approve.
No constraint violation per .ccvr file:
IBEX_2013_031_o0195a_v002.ccvr
The PL commands in the ATS v002 file match those in the STF
IBEX_2013_031_o0195a_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_2013_031_o0195a_v002.oef
Star tracker outage for 3 days and 18 hours near apogee
requires sun-pointing maneuver.
Moon in -LO FOV during descending arc; ATS commands are 2
hours early at start and 5 hours early at end for a 20 hour
Moon-in-Lo-FOV period, about normal.
Moon in -Lo FOV overlaps TOF No Filter test.
Ground station contact commands match contact times and bit
rates in Contacts file
IBEX_Orbit195Contacts_v001.txt
for all 3 contacts.
Battery cell balancing this orbit, as is appropriate. Should
skip next orbit. Second command is FALSE, 1.5 hours after first
command, hours away from any thing else, all as appropriate.
Inertial maneuver at the end of orbit 194 left us pointing in
extra safe directions for ascending and descending macros during
first half of orbit:
[tapley at ena ~]$ ibex_rotate -o -u 0.701247,-0.650044,-0.292739 -w
ibex-sun -t 2013/02:01:06:28:30
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.701247,-0.650044,-0.292739
which is R.A. +317.170 Decl. -17.022
missing R.A. +314.878 Decl. -17.076 (ibex-sun)
error is R.A. +2.292 Decl. +0.054
for a total 2.192 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.701247,-0.650044,-0.292739 -w
ibex-sun -t 2013/02:05:06:44:23
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.701247,-0.650044,-0.292739
which is R.A. +317.170 Decl. -17.022
missing R.A. +318.893 Decl. -15.944 (ibex-sun)
error is R.A. +1.723 Decl. +1.078
for a total 1.972 deg
Sun-pointing 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 -r+318.967 -d-15.922 -w ibex-sun -t
2013/02:05:08:32:31
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.725392,-0.631308,-0.274328
which is R.A. +318.967 Decl. -15.922
missing R.A. +318.967 Decl. -15.922 (ibex-sun)
error is R.A. +0.000 Decl. +0.000
for a total 0.000 deg
[tapley at ena ~]$ ibex_rotate -o -r+318.967 -d-15.922 -w ibex-sun -t
2013/02:05:10:02:37
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.725392,-0.631308,-0.274328
which is R.A. +318.967 Decl. -15.922
missing R.A. +319.029 Decl. -15.904 (ibex-sun)
error is R.A. +0.062 Decl. +0.018
for a total 0.062 deg
[tapley at ena ~]$ ibex_rotate -o -r+318.967 -d-15.922 -w ibex-sun -t
2013/02:09:10:02:09
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.725392,-0.631308,-0.274328
which is R.A. +318.967 Decl. -15.922
missing R.A. +322.996 Decl. -14.626 (ibex-sun)
error is R.A. +4.029 Decl. +1.296
for a total 4.097 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 0.806968,-0.537794,-0.244089 -w
ibex-sun -t 2013/02:09:17:16:46
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.806968,-0.537794,-0.244089
which is R.A. +326.319 Decl. -14.128
missing R.A. +323.314 Decl. -14.516 (ibex-sun)
error is R.A. +3.005 Decl. +0.388
for a total 2.938 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.806968,-0.537794,-0.244089 -w
ibex-sun -t 2013-02-14T12:32:06.422Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.806968,-0.537794,-0.244089
which is R.A. +326.319 Decl. -14.128
missing R.A. +328.066 Decl. -12.951 (ibex-sun)
error is R.A. +1.747 Decl. +1.177
for a total 2.066 deg
No -Lo O-mode Commands.
No overlap to orbit 194 commands apparent by manual check or
by reference to http://ibex.unh.edu/cgi-bin/ats.cgi . The website
does show interleaving of the -Lo TOF no-filter test ATS with the
o195 ATS.
Command Approval Checklist and Sun Maneuver 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. Note
that Sun-pointing maneuver means sun angles for descending arc are
intermediate between desired sun-pointing and standard angles.
At 13:58 -0500 1/18/13, Ibex Mission Operations wrote:
>Guys,
>Ken noticed some issues with the star tracker outages. I had to
>re-run the products and ATS for ORbit# 195.
>I forgot to commit the ATS generated for Orbit# 194 so MPS put two
>tracker outages on the OEF because we changed forecast STF files.
>Comments/approvals are needed before 21 Jan 12 @ 1800 UTC
>
>Sorry for the confusion : )
--
- Mark 210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
technology adequate to stop them:
Think of it as Evolution in Fast-Forward.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IBEX-Sun-Man-Chk-o195_MT.doc
Type: application/msword
Size: 69120 bytes
Desc: not available
Url : http://lists.sr.unh.edu/mailman/private/isocops/attachments/20130118/c06897b7/IBEX-Sun-Man-Chk-o195_MT-0001.doc
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IBEX-CAC_Rev10a_o195_MT.doc
Type: application/msword
Size: 92160 bytes
Desc: not available
Url : http://lists.sr.unh.edu/mailman/private/isocops/attachments/20130118/c06897b7/IBEX-CAC_Rev10a_o195_MT-0001.doc
More information about the Isocops
mailing list