[Isocops] IBEX Orbit# 121 v001 ATS - approve

[Mark Tapley]

All,
	I have looked at the Orbit 121 ATS v001 
(IBEX_2011_102_00_00_v001.txt) and I approve.

	The portentious "PL mode unknown" constraint violation 
messages appear near the beginning of the orbit, as always. I worry 
more about this now than I used to. No other violations.

	The PL commands in the ATS v001 match the STF v002 file 
(IBEX_2011_102_19_58_v002.stf) which includes -Lo gain scan commands, 
per Ken's script (Thanks, Ken!).

	PL ascending and descending operations make sense WRT 15 Re 
ascending and descending times respectively.

	No Moon in -Lo FOV PMT setback commands.

	Ground station contact times match S/C transmitter-on times 
for all 4 contacts.

	No battery cell balancing this odd-numbered orbit.

	Inertial sun-pointing maneuver at the end of this orbit 
leaves us pointing safe directions at conclusion of the maneuver, at 
the following ascending time, and at the descending time following 
that (using 
http://ibex.unh.edu/ibexhome/doc/isoc/spice/isoc_orbits.html for the 
descending time, since no Forecast .oef).

[tapley at ena ~]$ ibex_rotate -o -u 
0.8607629652837578,0.46698094380805516,0.20252386455934052 -w 
ibex-sun -t 2011/04:20:02:40:31
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.860763,+0.466981,+0.202524
  which is     R.A.  +28.481 Decl. +11.685
  missing      R.A.  +27.468 Decl. +11.293 (ibex-sun)
  error is     R.A.   +1.012 Decl.  +0.391
  for a total  1.067 deg
[tapley at ena ~]$ ibex_rotate -o -u 
0.8607629652837578,0.46698094380805516,0.20252386455934052 -w 
ibex-sun -t 2011-04-20T13:40:37.958Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.860763,+0.466981,+0.202524
  which is     R.A.  +28.481 Decl. +11.685
  missing      R.A.  +27.913 Decl. +11.481 (ibex-sun)
  error is     R.A.   +0.568 Decl.  +0.204
  for a total  0.593 deg
[tapley at ena ~]$ ibex_rotate -o -u 
0.8607629652837578,0.46698094380805516,0.20252386455934052 -w 
ibex-sun -t 2011-04-27T17:05:00.000Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.860763,+0.466981,+0.202524
  which is     R.A.  +28.481 Decl. +11.685
  missing      R.A.  +34.610 Decl. +13.818 (ibex-sun)
  error is     R.A.   +6.129 Decl.  +2.133
  for a total  6.346 deg

	No more O-mode.

	-Lo gain scan takes place at 17 Re ascending.



At 11:40 -0400 4/1/11, Ibex Mission Operations wrote:
>Guys,
>     Here is the ATS and planning files for Orbit# 121.  Please 
>approve/comment through this email chain by 7am 4 Apr 11.
>The ATS  will be uploaded 4 Apr 11 @ 1300 UTC
>

-- 
						- Mark     210-379-4635
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