[Isocops] IBEX Orbit# 196 ATS v001 - approve

Mon Jan 28 14:52:02 EST 2013

All,
	I have looked at the Orbit 196 ATS v002

IBEX_2013_040_o0196a_v001.txt

	and I approve.

	No constraint violation per .ccvr file:

IBEX_2013_040_o0196a_v001.ccvr

	The PL commands in the ATS v001 file match those in the STF v001

IBEX_2013_040_o0196a_v001.stf

	according to Ken's script (thanks!) with the exception of the 
SSR dump command needed for the APL dump.

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

IBEX_2013_040_o0196a_v001.oef

	Star tracker outage for 3 days and 20 hours (!) near apogee 
requires sun-pointing maneuver.

	Moon in -LO FOV during ascending arc; ATS commands are 30 
minutes late at start and 5 hours early at end for a 25 hour 
Moon-in-Lo-FOV period, about normal.

	Ground station contact commands match contact times and bit 
rates in Contacts file

IBEX_Orbit196Contacts_v001.txt

	for all 3 contacts.

	No battery cell balancing this orbit, as is appropriate. 
Should do next orbit.

	Inertial maneuver at the end of orbit 195 left us pointing in 
extra safe directions for ascending and descending macros during 
first half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u 0.806968,-0.537794,-0.244089 -w 
ibex-sun -t 2013/02:10:09:49:38
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.806968,-0.537794,-0.244089
  which is     R.A. +326.319 Decl. -14.128
  missing      R.A. +324.054 Decl. -14.277 (ibex-sun)
  error is     R.A.   +2.265 Decl.  +0.149
  for a total  2.201 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.806968,-0.537794,-0.244089 -w 
ibex-sun -t 2013/02:14:10:58:59
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.806968,-0.537794,-0.244089
  which is     R.A. +326.319 Decl. -14.128
  missing      R.A. +328.004 Decl. -12.973 (ibex-sun)
  error is     R.A.   +1.685 Decl.  +1.155
  for a total  2.004 deg

	Sun-pointing 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 -r +328.076 -d -12.948 -w ibex-sun -t 
2013/02:14:12:47:07
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.827170,-0.515349,-0.224067
  which is     R.A. +328.076 Decl. -12.948
  missing      R.A. +328.076 Decl. -12.948 (ibex-sun)
  error is     R.A.   +0.000 Decl.  +0.000
  for a total  0.000 deg
[tapley at ena ~]$ ibex_rotate -o -r +328.076 -d -12.948 -w ibex-sun -t 
2013/02:14:14:17:13
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.827170,-0.515349,-0.224067
  which is     R.A. +328.076 Decl. -12.948
  missing      R.A. +328.136 Decl. -12.927 (ibex-sun)
  error is     R.A.   +0.060 Decl.  +0.021
  for a total  0.062 deg
[tapley at ena ~]$ ibex_rotate -o -r +328.076 -d -12.948 -w ibex-sun -t 
2013/02:18:15:56:52
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.827170,-0.515349,-0.224067
  which is     R.A. +328.076 Decl. -12.948
  missing      R.A. +332.036 Decl. -11.493 (ibex-sun)
  error is     R.A.   +3.960 Decl.  +1.455
  for a total  4.134 deg

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

[tapley at ena ~]$ ibex_rotate -o -u 0.892165,-0.41035,-0.188821 -w 
ibex-sun -t 2013/02:18:23:34:49
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.892165,-0.410350,-0.188821
  which is     R.A. +335.300 Decl. -10.884
  missing      R.A. +332.359 Decl. -11.367 (ibex-sun)
  error is     R.A.   +2.941 Decl.  +0.483
  for a total  2.926 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.892165,-0.41035,-0.188821 -w 
ibex-sun -t 2013-02-23T21:10:53.292Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.892165,-0.410350,-0.188821
  which is     R.A. +335.300 Decl. -10.884
  missing      R.A. +337.090 Decl.  -9.616 (ibex-sun)
  error is     R.A.   +1.790 Decl.  +1.268
  for a total  2.171 deg

	No -Lo O-mode Commands.

	No overlap to orbit 195 commands apparent by manual check or 
by reference to  http://ibex.unh.edu/cgi-bin/ats.cgi . The website 
does show interleaving of the -Lo TOF no-filter test ATS with the 
o195 ATS.

	Command Approval Checklist and Sun Maneuver Checklist attached.

	-Hi Neg collimator back to operating at nominal voltage.

	Pointing is in -Lo ISM mode operations during January, so sun 
angles are lower and will continue to be lower through January. Note 
that Sun-pointing maneuver means sun angles for descending arc are 
intermediate between desired sun-pointing and standard angles.


At 20:22 -0500 1/27/13, Ibex Mission Operations wrote:
>Guys,
>     Here are the planning files and ATS for Orbit# 196.
>All approvals/comments are required before 30 Jan 13 @ 1800 UTC

-- 
						- Mark     210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
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				Think of it as Evolution in Fast-Forward.
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