[Isocops] IBEX Orbit# 191 ATS v002 - approve

Fri Dec 14 15:25:35 EST 2012

All,
	I have looked at the Orbit 191 ATS v002

IBEX_2012_361_o0191a_v002.txt

	and I approve.

	No constraint violation per .ccvr file:

IBEX_2012_361_o191a_v001.ccvr

	The PL commands in the ATS v002 file match those in the STF

IBEX_2012_361_o0191a_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_2012_352_o0191a_v001.oef

	Star tracker outage for first 2 days and 7 hours of first arc 
ascending science operations and SSR dump pass; should not affect 
ramp-up but may require de-spinning.

	Moon in -LO FOV during descending arc; ATS commands are 3 
hours early  start and just right end compared to .oef start and end 
times for an 8 hour eclipse, which is about normal.

	Ground station contact commands match contact times in Contacts file

IBEX_2011_Orbit191_v002.caf

	for all 3 contacts. (Note .caf file name is odd, saying 2011 
vs. 2012, but events match up.)

	Battery cell balancing this orbit. Should do next orbit as 
well. Second command is FALSE, 1.5 hours after first command, not 
near any other event.

	Inertial maneuver at the end of orbit 190 left us pointing in 
extra safe directions for ascending and descending macros during 
first half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u 0.069022,-0.911368,-0.405764 -w 
ibex-sun -t 2012/12:26:19:18:37
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.069022,-0.911368,-0.405764
  which is     R.A. +274.331 Decl. -23.939
  missing      R.A. +275.753 Decl. -23.329 (ibex-sun)
  error is     R.A.   +1.422 Decl.  +0.610
  for a total  1.438 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.069022,-0.911368,-0.405764 -w 
ibex-sun -t 2012/12:30:09:31:45
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.069022,-0.911368,-0.405764
  which is     R.A. +274.331 Decl. -23.939
  missing      R.A. +279.624 Decl. -23.175 (ibex-sun)
  error is     R.A.   +5.293 Decl.  +0.764
  for a total  4.911 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 0.178145,-0.898709,-0.400733 -w 
ibex-sun -t 2012/12:30:11:14:53
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.178145,-0.898709,-0.400733
  which is     R.A. +281.212 Decl. -23.624
  missing      R.A. +279.702 Decl. -23.171 (ibex-sun)
  error is     R.A.   +1.510 Decl.  +0.453
  for a total  1.458 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.178145,-0.898709,-0.400733 -w 
ibex-sun -t 2012/12:30:12:49:59
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.178145,-0.898709,-0.400733
  which is     R.A. +281.212 Decl. -23.624
  missing      R.A. +279.774 Decl. -23.167 (ibex-sun)
  error is     R.A.   +1.438 Decl.  +0.457
  for a total  1.397 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.178145,-0.898709,-0.400733 -w 
ibex-sun -t 2013/01:03:22:01:38
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.178145,-0.898709,-0.400733
  which is     R.A. +281.212 Decl. -23.624
  missing      R.A. +284.656 Decl. -22.758 (ibex-sun)
  error is     R.A.   +3.444 Decl.  +0.866
  for a total  3.282 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 0.286518,-0.875,-0.390233 -w 
ibex-sun -t 2013/01:04:05:16:04
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.286518,-0.875000,-0.390233
  which is     R.A. +288.131 Decl. -22.969
  missing      R.A. +285.015 Decl. -22.717 (ibex-sun)
  error is     R.A.   +3.116 Decl.  +0.252
  for a total  2.883 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.286518,-0.875,-0.390233 -w 
ibex-sun -t 2013-01-08T21:50:54.487Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.286518,-0.875000,-0.390233
  which is     R.A. +288.131 Decl. -22.969
  missing      R.A. +290.087 Decl. -22.188 (ibex-sun)
  error is     R.A.   +1.956 Decl.  +0.781
  for a total  1.967 deg

	No -Lo O-mode Commands.

	No overlap to orbit 190 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.

At 16:03 -0500 12/13/12, IBEX wrote:
>All,
>     Attached are the products for Orbit #191. Questions and/or 
>signed off check lists need to be completed By Noon on Dec 16.
>          Thanks
>                 Tim

At 12:38 -0500 12/14/12, IBEX wrote:
>All,
>    Attached is version 2 of the 191 ATS. Added is battery balancing
>
># Battery Balancing from 2013 Jan 4 10:00:00 - 11:30:00
>   @ECT_SetLongEclipseFlag TRUE $TIME=2013/01:04:10:00:00
>   @ECT_SetLongEclipseFlag FALSE $TIME=2013/01:04:11:30:00

-- 
						- Mark     210-379-4635
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