[Isocops] IBEX Orbit# 175 ATS v002 - approve

[Mark Tapley]

All,
	I have looked at the Orbit 175 ATS v002 (No -Lo commands, 
only 1 APL downlink)

IBEX_2012_216_o0175a_v001.txt

and I approve.

	Constraint violations per .ccvr file:

IBEX_2012_216_o0175a_v001.ccvr

	due to APL-18 contacts in v001, as expected. Version 002 
removes the 2nd and 3rd contact and the constraint violation.

	The PL commands in the ATS v001 match the STF v002

IBEX_2012_216_o0175a_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_216_o0175a_v001.oef

	Star tracker outage near perigee does not affect inertial maneuver.

	Moon in -LO FOV times irrelevant, since -Lo is off.

	Ground station contact times in command load match ground times in

IBEX_Orbit175Contacts_v001.txt

	for all 3 contacts, including the first APL contact; deletion 
for the 2nd 2 have been requested.

	Battery cell balancing this orbit. Commands span 1.5 hours, 
are >1 hour away from anything except a star tracker outage (which is 
irrelevant), and the FALSE Command is second as expected.

	Inertial maneuver at the end of orbit 174 left us pointing in 
a safe direction for ascending and descending macros during first 
half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u -0.631435,0.716424,0.296692 -w 
ibex-sun -t 2012/08:04:00:10:25
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.631435,+0.716424,+0.296692
  which is     R.A. +131.392 Decl. +17.259
  missing      R.A. +134.286 Decl. +17.246 (ibex-sun)
  error is     R.A.   +2.894 Decl.  +0.013
  for a total  2.764 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.631435,0.716424,0.296692 -w 
ibex-sun -t 2012/08:07:15:12:46
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.631435,+0.716424,+0.296692
  which is     R.A. +131.392 Decl. +17.259
  missing      R.A. +137.802 Decl. +16.203 (ibex-sun)
  error is     R.A.   +6.410 Decl.  +1.056
  for a total  6.229 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 -0.68802,0.670684,0.277147 -w 
ibex-sun -t 2012/08:07:16:56:34
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.688020,+0.670684,+0.277147
  which is     R.A. +135.731 Decl. +16.090
  missing      R.A. +137.872 Decl. +16.182 (ibex-sun)
  error is     R.A.   +2.141 Decl.  +0.092
  for a total  2.059 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.68802,0.670684,0.277147 -w 
ibex-sun -t 2012/08:07:18:31:40
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.688020,+0.670684,+0.277147
  which is     R.A. +135.731 Decl. +16.090
  missing      R.A. +137.936 Decl. +16.163 (ibex-sun)
  error is     R.A.   +2.205 Decl.  +0.073
  for a total  2.120 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.68802,0.670684,0.277147 -w 
ibex-sun -t 2012/08:12:05:23:37
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.688020,+0.670684,+0.277147
  which is     R.A. +135.731 Decl. +16.090
  missing      R.A. +142.184 Decl. +14.878 (ibex-sun)
  error is     R.A.   +6.453 Decl.  +1.212
  for a total  6.335 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 -0.742684,0.619353,0.254602 -w 
ibex-sun -t 2012/08:12:12:34:40
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.742684,+0.619353,+0.254602
  which is     R.A. +140.174 Decl. +14.750
  missing      R.A. +142.448 Decl. +14.802 (ibex-sun)
  error is     R.A.   +2.274 Decl.  +0.052
  for a total  2.200 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.742684,0.619353,0.254602 -w 
ibex-sun -t 2012-08-17T10:09:41.909Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.742684,+0.619353,+0.254602
  which is     R.A. +140.174 Decl. +14.750
  missing      R.A. +147.019 Decl. +13.243 (ibex-sun)
  error is     R.A.   +6.845 Decl.  +1.507
  for a total  6.810 deg

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

	No overlap to orbit 174 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 13:47 -0400 7/23/12, Ibex Mission Operations wrote:
>Guys,
>     Here is v002 of the ATS
>I have made changes to the APL-18 Contacts
>We will dump the SSR on the first contact, and cancel the remaining 
>contacts because they are ascending.


-- 
						- Mark     210-379-4635
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