[Isocops] IBEX Orbit# 170 ATS v002 - xxx

Mark Tapley mtapley at swri.edu
Tue Jun 5 16:27:47 EDT 2012


All,
	I have looked at the Orbit 170 ATS v002

IBEX_2012_170_o0170a_v002.txt

and I xxx.

	Soft constraint violations per .ccvr file:

IBEX_2012_170_o0170a_v001.ccvr

	as expected. Long eclipse results in low battery SOC; Spin 
pulse enable is done by STF.

	The PL commands in the ATS v001 match the STF v001

IBEX_2012_170_o0170a_v001.stf

per Ken's script (thanks!).

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

IBEX_2012_170_o0170a_v001.oef

	Star tracker outage on 6/27 delays perigee maneuver by ~2 
hours, no other effect or outages.

	Moon in -LO FOV Commands are concentric with .oef times and 7 
to 3 hours off over a 24 hour eclipse; this is normal.

	Ground station contact times agree with times in

IBEX_Orbit170Contacts_v001.txt

	for all 5 contacts.

	No battery cell balancing this orbit. Charge before long 
eclipse should accomplish this.

	Inertial maneuver at the end of orbit 169 left us pointing in 
a safe direction for ascending and descending macros during first 
half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u 0.083982,0.919254,0.384601 -w 
ibex-sun -t 2012/06:18:21:25:30
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.083982,+0.919255,+0.384601
  which is     R.A.  +84.780 Decl. +22.619
  missing      R.A.  +87.637 Decl. +23.426 (ibex-sun)
  error is     R.A.   +2.857 Decl.  +0.807
  for a total  2.750 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.083982,0.919254,0.384601 -w 
ibex-sun -t 2012/06:22:13:46:16
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.083982,+0.919255,+0.384601
  which is     R.A.  +84.780 Decl. +22.619
  missing      R.A.  +91.582 Decl. +23.400 (ibex-sun)
  error is     R.A.   +6.802 Decl.  +0.781
  for a total  6.309 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 0.007309,0.922347,0.386292 -w 
ibex-sun -t 2012/06:22:15:30:04
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.007309,+0.922347,+0.386292
  which is     R.A.  +89.546 Decl. +22.724
  missing      R.A.  +91.658 Decl. +23.399 (ibex-sun)
  error is     R.A.   +2.112 Decl.  +0.675
  for a total  2.057 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.007309,0.922347,0.386292 -w 
ibex-sun -t 2012/06:22:17:05:10
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.007309,+0.922347,+0.386292
  which is     R.A.  +89.546 Decl. +22.724
  missing      R.A.  +91.727 Decl. +23.397 (ibex-sun)
  error is     R.A.   +2.181 Decl.  +0.674
  for a total  2.117 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.007309,0.922347,0.386292 -w 
ibex-sun -t 2012/06:27:04:23:28
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.007309,+0.922347,+0.386292
  which is     R.A.  +89.546 Decl. +22.724
  missing      R.A.  +96.298 Decl. +23.304 (ibex-sun)
  error is     R.A.   +6.752 Decl.  +0.580
  for a total  6.241 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 -0.0705,0.920218,0.385004 -w 
ibex-sun -t 2012/06:27:14:17:14
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.070500,+0.920218,+0.385004
  which is     R.A.  +94.381 Decl. +22.644
  missing      R.A.  +96.690 Decl. +23.299 (ibex-sun)
  error is     R.A.   +2.309 Decl.  +0.655
  for a total  2.224 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.0705,0.920218,0.385004 -w 
ibex-sun -t 2012-07-02T05:51:21.310Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.070500,+0.920218,+0.385004
  which is     R.A.  +94.381 Decl. +22.644
  missing      R.A. +101.599 Decl. +22.977 (ibex-sun)
  error is     R.A.   +7.218 Decl.  +0.333
  for a total  6.661 deg

	No -Lo O-mode Commands, but -Lo is doing new TOF2 commands both arcs.

	No overlap to orbit 169 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 14:07 -0400 6/5/12, Ibex Mission Operations wrote:
>Guys,
>   Here are the planning files and ATS for Orbit# 170.
>Please respond to this email thread with comments/approvals.
>All comments/approvals are due before 8 June 12 @1200 UTC.

-- 
						- Mark     210-379-4635
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