[Isocops] IBEX Orbit# 164 ATS v001 - approve

[Mark Tapley]

All,
	I have looked at the Orbit 164 ATS v001

IBEX_2012_116_o0164a_v001.txt

and I approve.

	No constraint violations per .ccvr file:

IBEX_2012_116_o0164a_v001.ccvr

	The PL commands in the ATS v001 match the STF v001

IBEX_2012_115_o0164a_v001.stf

per Ken's script.

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

IBEX_2012_116_o0164a_v001.oef

	Star tracker outage from May 2 to May 4 obscures part of 
perigee; sun-pointing maneuver is done during this outage.

	Moon in -Lo FOV is reflected by .ATS commands; ATS lags 9.5 
and 4.5 hours behind (for a 30-hour Moon-in-FOV) .oef predictions, 
within normal tolerances.

	Ground station contact times and rates per

IBEX_Orbit164Contacts_v001.txt

match S/C commands for all 3 contacts.

	Battery cell balancing this orbit; we skipped last orbit. 
Balancing is more than 90 minutes from anything.

	Inertial maneuver at the end of orbit 163 left us pointing in 
a safe direction for ascending and descending macros during first 
half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u 0.840205,0.502474,0.203898 -w 
ibex-sun -t 2012/04:25:14:03:46
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.840205,+0.502474,+0.203898
  which is     R.A.  +30.881 Decl. +11.765
  missing      R.A.  +33.312 Decl. +13.398 (ibex-sun)
  error is     R.A.   +2.431 Decl.  +1.633
  for a total  2.881 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.840205,0.502474,0.203898 -w 
ibex-sun -t 2012/04:29:03:50:50
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.840205,+0.502474,+0.203898
  which is     R.A.  +30.881 Decl. +11.765
  missing      R.A.  +36.796 Decl. +14.524 (ibex-sun)
  error is     R.A.   +5.915 Decl.  +2.759
  for a total  6.386 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 0.795418,0.560898,0.229574 -w 
ibex-sun -t 2012/04:29:05:39:38
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.795418,+0.560898,+0.229574
  which is     R.A.  +35.190 Decl. +13.272
  missing      R.A.  +36.868 Decl. +14.547 (ibex-sun)
  error is     R.A.   +1.678 Decl.  +1.275
  for a total  2.069 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.795418,0.560898,0.229574 -w 
ibex-sun -t 2012/04:29:07:09:44
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.795418,+0.560898,+0.229574
  which is     R.A.  +35.190 Decl. +13.272
  missing      R.A.  +36.928 Decl. +14.566 (ibex-sun)
  error is     R.A.   +1.738 Decl.  +1.294
  for a total  2.126 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.795418,0.560898,0.229574 -w 
ibex-sun -t 2012/05:03:16:56:21
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.795418,+0.560898,+0.229574
  which is     R.A.  +35.190 Decl. +13.272
  missing      R.A.  +41.018 Decl. +15.874 (ibex-sun)
  error is     R.A.   +5.828 Decl.  +2.602
  for a total  6.211 deg

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

[tapley at ena ~]$ ibex_rotate -o -r +41.301 -d +15.969 -w ibex-sun -t 
2012/05:04:00:20:39
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.722262,+0.634545,+0.275117
  which is     R.A.  +41.301 Decl. +15.969
  missing      R.A.  +41.301 Decl. +15.969 (ibex-sun)
  error is     R.A.   +0.000 Decl.  +0.000
  for a total  0.001 deg
[tapley at ena ~]$ ibex_rotate -o -r +41.301 -d +15.969 -w ibex-sun -t 
2012-05-08T15:46:11.187Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.722262,+0.634545,+0.275117
  which is     R.A.  +41.301 Decl. +15.969
  missing      R.A.  +45.933 Decl. +17.268 (ibex-sun)
  error is     R.A.   +4.632 Decl.  +1.299
  for a total  4.624 deg

	No -Lo O-mode Commands.

	No overlap to orbit 163 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 16:18 -0400 4/11/12, Ibex Mission Operations wrote:
>Guys,
>     Here are the planning files and ATS for Orbit# 164.
>Please respond to this email thread with approvals/questions.
>Approvals/questions are required before 13 April 12 @ 1800 UTC (Yes, 
>it's due on Friday the 13th......I'm pushing my LUCK)
>
>Note the following:
>1. Sun Precession at PERIGEE
>2. Battery Balancing Cycle  starts 1 1/2 hrs after the Sun 
>Precession Maneuver  at PERIGEE

-- 
						- Mark     210-379-4635
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