[Isocops] IBEX Orbit# 162 ATS v001 (and -Lo TOF test v002) - approve

Mark Tapley mtapley at swri.edu
Mon Mar 26 15:46:29 EDT 2012


All,
	I have looked at the Orbit 162 ATS v001

IBEX_2012_098_o0162a_v001.txt

	and the additional -Lo TOF test ATS

IBEX_2012_098_o0162a_loTOFTest_v002.txt

and I approve. The TOF test commands fall in the correct period 
between 15 Re ascending and Apogee descending commands.

	No constraint violations per .ccvr file:

IBEX_2012_098_o0162a_v001.ccvr

	The PL commands in the ATS v001 match the STF v001

IBEX_2012_098_o0162a_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_098_o0162a_v001.oef

	Star tracker outage from the beginning of orbit to the 11th 
required sun-pointing maneuver at previous perigee. Moon in -Lo FOV 
from 14th to 15th; ATS commands are later than .oef predictions by 
1-2 hours for a 14-hour period; this is normal.

	Ground station contact times and rates per

IBEX_Orbit162Contacts_v001.txt

match S/C commands for all 3 contacts.

	Battery cell balancing this orbit; we skipped orbit before 
last. True for 90 minutes, FALSE is second command, 2 hours from 
anything.

	Sun-pointing maneuver at the end of orbit 161 left us 
pointing in a safe direction for ascending and descending macros 
during first half of orbit:

[tapley at ena ~]$ ibex_rotate -o -r +16.056 -d +6.837 -w ibex-sun -t 
2012/04:07:17:35:14
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.954158,+0.274610,+0.119045
  which is     R.A.  +16.056 Decl.  +6.837
  missing      R.A.  +16.748 Decl.  +7.126 (ibex-sun)
  error is     R.A.   +0.692 Decl.  +0.289
  for a total  0.746 deg
[tapley at ena ~]$ ibex_rotate -o -r +16.056 -d +6.837 -w ibex-sun -t 
2012/04:11:07:44:17
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.954158,+0.274610,+0.119045
  which is     R.A.  +16.056 Decl.  +6.837
  missing      R.A.  +20.110 Decl.  +8.444 (ibex-sun)
  error is     R.A.   +4.054 Decl.  +1.607
  for a total  4.328 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 0.941184,0.314769,0.122857 -w 
ibex-sun -t 2012/04:11:09:33:25
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.941184,+0.314769,+0.122857
  which is     R.A.  +18.492 Decl.  +7.057
  missing      R.A.  +20.180 Decl.  +8.471 (ibex-sun)
  error is     R.A.   +1.688 Decl.  +1.414
  for a total  2.190 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.941184,0.314769,0.122857 -w 
ibex-sun -t 2012/04:11:11:03:11
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.941184,+0.314769,+0.122857
  which is     R.A.  +18.492 Decl.  +7.057
  missing      R.A.  +20.236 Decl.  +8.494 (ibex-sun)
  error is     R.A.   +1.745 Decl.  +1.437
  for a total  2.248 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.941184,0.314769,0.122857 -w 
ibex-sun -t 2012/04:15:15:19:14
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.941184,+0.314769,+0.122857
  which is     R.A.  +18.492 Decl.  +7.057
  missing      R.A.  +23.981 Decl.  +9.984 (ibex-sun)
  error is     R.A.   +5.489 Decl.  +2.927
  for a total  6.167 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 -u 0.913,0.379204,0.15045 -w ibex-sun 
-t 2012/04:15:22:16:36
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.913000,+0.379204,+0.150450
  which is     R.A.  +22.555 Decl.  +8.653
  missing      R.A.  +24.243 Decl. +10.093 (ibex-sun)
  error is     R.A.   +1.688 Decl.  +1.440
  for a total  2.201 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.913,0.379204,0.15045 -w ibex-sun 
-t 2012-04-20T14:07:30.408Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.913000,+0.379204,+0.150450
  which is     R.A.  +22.555 Decl.  +8.653
  missing      R.A.  +28.705 Decl. +11.727 (ibex-sun)
  error is     R.A.   +6.150 Decl.  +3.074
  for a total  6.788 deg

	No -Lo O-mode Commands.

	No overlap to orbit 161 commands apparent by manual check or 
by reference to   http://ibex.unh.edu/cgi-bin/ats.cgi . As noted 
above, interleave with TOF test commands is correct as well.

	Command Approval Checklist attached.

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

	Penumbra-only eclipse lasting 70 minutes during next orbit 
ascending arc.


At 19:59 -0400 3/25/12, Ibex Mission Operations wrote:
>Guys,
>     Here are the planning files and ATS for Orbit# 162.
>Please respond to this email link for all approvals/comments.
>Approvals and comments are due before 27 Mar 12 @ 1900 UTC


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