[Isocops] IBEX Orbit# 194 ATS v002 - approve
Mark Tapley
mtapley at swri.edu
Wed Jan 9 19:08:43 EST 2013
All,
I have looked at the Orbit 194 ATS v002
IBEX_2013_022_o0194a_v002.txt
and I approve.
No constraint violation per .ccvr file:
IBEX_2013_022_o0194a_v002.ccvr
The PL commands in the ATS v002 file match those in the STF
IBEX_2013_022_o0194a_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_022_o0194a_v001.oef
Star tracker outage for 4 days and 5 hours near apogee
requires sun-pointing maneuver.
No Moon in -LO FOV during orbit.
Ground station contact commands match contact times and bit
rates in Contacts file
IBEX_2013_Orbit194_v002.caf
for all 3 contacts.
Battery cell balancing this orbit, as is appropriate. Should
do next orbit as well. 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 193 left us pointing in
extra safe directions for ascending and descending macros during
first half of orbit:
[tapley at ena ~]$ ibex_rotate -o -u 0.574771,-0.74676,-0.334646 -w
ibex-sun -t 2013/01:22:23:32:34
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.574771,-0.746760,-0.334646
which is R.A. +307.585 Decl. -19.551
missing R.A. +305.268 Decl. -19.489 (ibex-sun)
error is R.A. +2.317 Decl. +0.062
for a total 2.185 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.574771,-0.74676,-0.334646 -w
ibex-sun -t 2013/01:27:01:51:54
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.574771,-0.746760,-0.334646
which is R.A. +307.585 Decl. -19.551
missing R.A. +309.478 Decl. -18.537 (ibex-sun)
error is R.A. +1.893 Decl. +1.014
for a total 2.056 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 +309.554 -d -18.518 -w ibex-sun -t
2013/01:27:03:40:02
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.603834,-0.731104,-0.317603
which is R.A. +309.554 Decl. -18.518
missing R.A. +309.554 Decl. -18.518 (ibex-sun)
error is R.A. +0.000 Decl. +0.000
for a total 0.000 deg
[tapley at ena ~]$ ibex_rotate -o -r +309.554 -d -18.518 -w ibex-sun -t
2013/01:27:05:10:08
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.603834,-0.731104,-0.317603
which is R.A. +309.554 Decl. -18.518
missing R.A. +309.618 Decl. -18.502 (ibex-sun)
error is R.A. +0.064 Decl. +0.016
for a total 0.063 deg
[tapley at ena ~]$ ibex_rotate -o -r +309.554 -d -18.518 -w ibex-sun -t
2013/01:31:06:42:03
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.603834,-0.731104,-0.317603
which is R.A. +309.554 Decl. -18.518
missing R.A. +313.792 Decl. -17.380 (ibex-sun)
error is R.A. +4.238 Decl. +1.138
for a total 4.189 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 0.701247,-0.650044,-0.292739 -w
ibex-sun -t 2013/01:31:13:51:07
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. +314.117 Decl. -17.284 (ibex-sun)
error is R.A. +3.053 Decl. +0.262
for a total 2.929 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.701247,-0.650044,-0.292739 -w
ibex-sun -t 2013-02-05T08:17:29.464Z
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. +318.957 Decl. -15.925 (ibex-sun)
error is R.A. +1.787 Decl. +1.097
for a total 2.034 deg
No -Lo O-mode Commands.
No overlap to orbit 193 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. Note
that Sun-pointing maneuver means sun angles for descending arc are
intermediate between desired sun-pointing and standard angles.
At 0:30 -0500 1/9/13, Tim Perry wrote:
>All,
> Attached are the products for Orbit 194 VER 2. Battery balancing was
>omitted from the first ATS. All questions and approvals need to be in by
>cob Jan 12, 2013.
> Thanks
> Tim
--
- Mark 210-379-4635
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