[Isocops] IBEX Orbit# 193 ATS v001 - approve

Mark Tapley mtapley at swri.edu
Mon Dec 31 14:07:46 EST 2012


All,
	I have looked at the Orbit 193 ATS v001

IBEX_2013_013_o0193a_v001.txt

	and I approve.

	No constraint violation per .ccvr file:

IBEX_2013_013_o0193a_v001.ccvr

	The PL commands in the ATS v001 file match those in the STF

IBEX_2013_013_o0193a_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_013_o0193a_v001.oef

	Star tracker outage for 2 days and 17 hours of first arc 
ascending science operations; may require de-spinning.

	Moon in -LO FOV during ascending arc; ATS commands are 0.5 
hours late start and 1.5 hours early end compared to .oef start and 
end times for a 17 hour Moon in FOV period, which is about normal.

	Ground station contact commands match contact times and bit 
rates in Contacts file

IBEX_2011_Orbit193_v001.caf

	for all 3 contacts. (Note .caf file name is odd, saying 2011 
vs. 2013, but events match up.)

	No Battery cell balancing this orbit, as is appropriate. 
Should do next orbit.

	Inertial maneuver at the end of orbit 192 left us pointing in 
extra safe directions for ascending and descending macros during 
first half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u 0.435422,-0.821918,-0.367232 -w 
ibex-sun -t 2013/01:13:21:15:04
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.435422,-0.821918,-0.367232
  which is     R.A. +297.913 Decl. -21.545
  missing      R.A. +295.583 Decl. -21.354 (ibex-sun)
  error is     R.A.   +2.330 Decl.  +0.191
  for a total  2.177 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.435422,-0.821918,-0.367232 -w 
ibex-sun -t 2013/01:17:10:48:45
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.435422,-0.821918,-0.367232
  which is     R.A. +297.913 Decl. -21.545
  missing      R.A. +299.334 Decl. -20.736 (ibex-sun)
  error is     R.A.   +1.421 Decl.  +0.809
  for a total  1.552 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 0.497931,-0.791589,-0.354193 -w 
ibex-sun -t 2013/01:17:12:31:53
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.497931,-0.791589,-0.354193
  which is     R.A. +302.171 Decl. -20.744
  missing      R.A. +299.409 Decl. -20.723 (ibex-sun)
  error is     R.A.   +2.762 Decl.  +0.021
  for a total  2.583 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.497931,-0.791589,-0.354193 -w 
ibex-sun -t 2013/01:17:14:06:59
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.497931,-0.791589,-0.354193
  which is     R.A. +302.171 Decl. -20.744
  missing      R.A. +299.478 Decl. -20.710 (ibex-sun)
  error is     R.A.   +2.693 Decl.  +0.034
  for a total  2.519 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.497931,-0.791589,-0.354193 -w 
ibex-sun -t 2013/01:21:23:43:53
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.497931,-0.791589,-0.354193
  which is     R.A. +302.171 Decl. -20.744
  missing      R.A. +304.151 Decl. -19.740 (ibex-sun)
  error is     R.A.   +1.980 Decl.  +1.004
  for a total  2.112 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 0.574771,-0.74676,-0.334646 -w 
ibex-sun -t 2013/01:22:07:10:25
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. +304.502 Decl. -19.656 (ibex-sun)
  error is     R.A.   +3.083 Decl.  +0.105
  for a total  2.906 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.574771,-0.74676,-0.334646 -w 
ibex-sun -t 2013-01-27T03:25:27.367Z
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. +309.544 Decl. -18.520 (ibex-sun)
  error is     R.A.   +1.959 Decl.  +1.031
  for a total  2.119 deg

	No -Lo O-mode Commands.

	No overlap to orbit 192 commands apparent by manual check; 
http://ibex.unh.edu/cgi-bin/ats.cgi has not yet ingested the o193 
load.

	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.

	Happy New Year!

At 2:43 -0500 12/31/12, IBEX wrote:
>All,
>    Attached are the products for Orbit 193. Attached are the ATS files for
>Orbit 192. All questions and approvals need to be in by noon Jan 3, 2013.
>    Thanks
>       Tim

-- 
						- Mark     210-379-4635
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