[Isocops] IBEX Orbit# 167 ATS v002 - approve

Mark Tapley mtapley at swri.edu
Wed May 9 18:20:33 EDT 2012


All,
	I have looked at the Orbit 167 ATS v001

IBEX_2012_143_o0167a_v001.txt

and I approve.

	No constraint violations per .ccvr file:

IBEX_2012_143_o0167a_v001.ccvr

	The PL commands in the ATS v001 match the STF v001

IBEX_2012_142_o0167a_v001.stf

per Ken's script, taking into account the shorter apogee burn time.

	PL ascending and descending operations make sense with 
respect to 15 Re ascending, Apogee, and 15 Re descending times from

IBEX_2012_143_o0167a_v001.oef

	Star tracker outage on May 30-31 during perigee descend does 
not affect perigee maneuver window.

	Ground station contact times and rates per

IBEX_Orbit167Contacts_v001.txt

match S/C commands for all 3 contacts.

	No battery cell balancing this orbit and none last orbit.

	Inertial maneuver at the end of orbit 166 left us pointing in 
a safe direction for ascending and descending macros during first 
half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u 0.514392,0.791791,0.329345 -w 
ibex-sun -t 2012/05:22:14:57:19
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.514392,+0.791791,+0.329345
  which is     R.A.  +56.990 Decl. +19.229
  missing      R.A.  +59.635 Decl. +20.515 (ibex-sun)
  error is     R.A.   +2.645 Decl.  +1.286
  for a total  2.800 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.514392,0.791791,0.329345 -w 
ibex-sun -t 2012/05:26:05:44:46
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.514392,+0.791791,+0.329345
  which is     R.A.  +56.990 Decl. +19.229
  missing      R.A.  +63.409 Decl. +21.159 (ibex-sun)
  error is     R.A.   +6.419 Decl.  +1.930
  for a total  6.325 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 0.446908,0.825643,0.344364 -w 
ibex-sun -t 2012/05:26:07:28:34
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.446908,+0.825643,+0.344364
  which is     R.A.  +61.574 Decl. +20.143
  missing      R.A.  +63.482 Decl. +21.171 (ibex-sun)
  error is     R.A.   +1.908 Decl.  +1.028
  for a total  2.060 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.446908,0.825643,0.344364 -w 
ibex-sun -t 2012/05:26:09:03:40
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.446908,+0.825643,+0.344364
  which is     R.A.  +61.574 Decl. +20.143
  missing      R.A.  +63.549 Decl. +21.182 (ibex-sun)
  error is     R.A.   +1.975 Decl.  +1.039
  for a total  2.120 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.446908,0.825643,0.344364 -w 
ibex-sun -t 2012/05:30:19:18:31
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.446908,+0.825643,+0.344364
  which is     R.A.  +61.574 Decl. +20.143
  missing      R.A.  +67.938 Decl. +21.882 (ibex-sun)
  error is     R.A.   +6.364 Decl.  +1.739
  for a total  6.189 deg

	Inertial maneuver at perigee leaves us pointing in a safe 
direction at maneuver and at following Apogee.

[tapley at ena ~]$ ibex_rotate -o -u 0.376763,0.854882,0.356689 -w 
ibex-sun -t 2012/05:31:03:02:30
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.376763,+0.854882,+0.356689
  which is     R.A.  +66.216 Decl. +20.897
  missing      R.A.  +68.244 Decl. +21.933 (ibex-sun)
  error is     R.A.   +2.028 Decl.  +1.036
  for a total  2.154 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.376763,0.854882,0.356689 -w 
ibex-sun -t 2012-06-04T19:21:19.050Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.376763,+0.854882,+0.356689
  which is     R.A.  +66.216 Decl. +20.897
  missing      R.A.  +73.179 Decl. +22.505 (ibex-sun)
  error is     R.A.   +6.963 Decl.  +1.608
  for a total  6.666 deg

	No -Lo O-mode Commands.

	No overlap to orbit 166 commands apparent by manual check or 
by reference to http://ibex.unh.edu/cgi-bin/ats.cgi .

	Command Approval Checklist attached.

	-Hi Neg collimator voltage back to operating at nominal voltage.


At 12:13 -0400 5/9/12, Ibex Mission Operations wrote:
>Guys,
>    Here are the planning files and ATS for Orbit# 167.
>Please respond to this email with all comments,questions and  approvals
>Approvals are due before 11 May 12 @1800 UTC

-- 
						- Mark     210-379-4635
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