[Isocops] IBEX Orbit# 177 ATS v002 - approve - no contact commands in ATS

Thu Aug 9 17:33:59 EDT 2012

All,
	I have looked at the Orbit 177 ATS v002 (No -Lo commands)

IBEX_2012_235_o0177a_v002.txt

and I approve.

	No constraint violations per .ccvr file:

IBEX_2012_235_o0177a_v001.ccvr

	The PL commands in the ATS v002 match the STF v002

IBEX_2012_234_o0177a_v002.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_235_o0177a_v001.oef

	Star tracker outage near perigee necessitates sun-pointing maneuver.

	Moon in -LO FOV; HV set-back commands appear in

IBEX_2012_o0177_Lo_Star_Sensor_v001.txt

	-Lo commands are concentric with .oef Moon-in-FOV times and 
inside by 1-2 hours, as normal. NB: This load will probably not be 
made, to allow for -Lo turn-on at start of o177.

	Ground station contact times in

IBEX_Orbit177Contacts_v001.txt

	have no matching contact times in ATS. Presumably coming in a 
later load?

	Battery cell balancing this orbit; commands are > 1.5 hours 
from anything and FALSE command is the second one, as expect.

	Inertial maneuver at the end of orbit 176 left us pointing in 
a safe direction for ascending and descending macros during first 
half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u -0.838462,0.504935,0.204991 -w 
ibex-sun -t 2012/08:22:14:38:06
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.838462,+0.504935,+0.204991
  which is     R.A. +148.943 Decl. +11.829
  missing      R.A. +151.791 Decl. +11.585 (ibex-sun)
  error is     R.A.   +2.848 Decl.  +0.244
  for a total  2.800 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.838462,0.504935,0.204991 -w 
ibex-sun -t 2012/08:26:05:17:40
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.838462,+0.504935,+0.204991
  which is     R.A. +148.943 Decl. +11.829
  missing      R.A. +155.113 Decl. +10.306 (ibex-sun)
  error is     R.A.   +6.170 Decl.  +1.523
  for a total  6.244 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 -0.877199,0.445336,0.179438 -w 
ibex-sun -t 2012/08:26:07:01:28
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.877199,+0.445336,+0.179438
  which is     R.A. +153.084 Decl. +10.337
  missing      R.A. +155.180 Decl. +10.280 (ibex-sun)
  error is     R.A.   +2.096 Decl.  +0.057
  for a total  2.063 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.877199,0.445336,0.179438 -w 
ibex-sun -t 2012/08:26:08:36:34
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.877199,+0.445336,+0.179438
  which is     R.A. +153.084 Decl. +10.337
  missing      R.A. +155.242 Decl. +10.256 (ibex-sun)
  error is     R.A.   +2.158 Decl.  +0.081
  for a total  2.125 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.877199,0.445336,0.179438 -w 
ibex-sun -t 2012/08:30:18:45:29
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.877199,+0.445336,+0.179438
  which is     R.A. +153.084 Decl. +10.337
  missing      R.A. +159.329 Decl.  +8.694 (ibex-sun)
  error is     R.A.   +6.245 Decl.  +1.643
  for a total  6.374 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 +159.583 -d +8.602 -w ibex-sun -t 
2012/08:31:01:44:55
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.926636,+0.344926,+0.149570
  which is     R.A. +159.583 Decl.  +8.602
  missing      R.A. +159.583 Decl.  +8.602 (ibex-sun)
  error is     R.A.   +0.000 Decl.  +0.000
  for a total  0.001 deg
[tapley at ena ~]$ ibex_rotate -o -r +159.583 -d +8.602 -w ibex-sun -t 
2012-09-04T20:09:36.581Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.926636,+0.344926,+0.149570
  which is     R.A. +159.583 Decl.  +8.602
  missing      R.A. +163.837 Decl.  +6.845 (ibex-sun)
  error is     R.A.   +4.254 Decl.  +1.757
  for a total  4.567 deg

	No -Lo O-mode (or any) Commands.

	No overlap to orbit 176 commands apparent by manual check or 
by reference to http://ibex.unh.edu/cgi-bin/ats.cgi although -Lo star 
sensor commands for o177 are intermingled with normal commands for 
this orbit.

	Command Approval Checklist attached.

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

At 18:30 -0400 8/8/12, Ibex Mission Operations wrote:
>Guys,
>     I have attached V002 of the Orbit# 177 ATS.  The V002 ATS 
>includes battery balancing commands during PERIGEE.
>The commands begin 30 minutes before PERIGEE and end 1 1/2 hrs 
>before the 0900 UTC contact
>I will place the new ATS on the SFTP before tomorrow morning

-- 
						- Mark     210-379-4635
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