[Isocops] IBEX Orbit# 122 v001 ATS - approve

Mark Tapley mtapley at swri.edu
Tue Apr 12 12:02:12 EDT 2011


All,
	I have looked at the Orbit 122 ATS v001 
(IBEX_2011_110_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 v001 file 
(IBEX_2011_110_13_40_v001.stf), per Ken's script (Thanks, Ken!).

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

	Moon in -Lo FOV PMT setback commands are concentric with the 
.oef MoonInLoFOV times, and inside by ~1 hour.

	Ground station contact times match S/C transmitter-on times 
for all 3 contacts.

	Battery cell balancing this odd-numbered orbit is > an hour 
from anything.

	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.

[tapley at ena ~]$ ibex_rotate -o -u 
0.7883049913858586,0.5644935689651265,0.24479021866315492 -w ibex-sun 
-t 2011/04:27:17:36:23
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.788305,+0.564494,+0.244790
  which is     R.A.  +35.606 Decl. +14.169
  missing      R.A.  +34.629 Decl. +13.825 (ibex-sun)
  error is     R.A.   +0.977 Decl.  +0.344
  for a total  1.009 deg
[tapley at ena ~]$ ibex_rotate -o -u 
0.7883049913858586,0.5644935689651265,0.24479021866315492 -w ibex-sun 
-t 2011-04-28T08:23:47.401Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.788305,+0.564494,+0.244790
  which is     R.A.  +35.606 Decl. +14.169
  missing      R.A.  +35.240 Decl. +14.052 (ibex-sun)
  error is     R.A.   +0.366 Decl.  +0.118
  for a total  0.374 deg
[tapley at ena ~]$ ibex_rotate -o -u 
0.7883049913858586,0.5644935689651265,0.24479021866315492 -w ibex-sun 
-t 2011-05-05T02:15:49.640Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.788305,+0.564494,+0.244790
  which is     R.A.  +35.606 Decl. +14.169
  missing      R.A.  +41.673 Decl. +16.059 (ibex-sun)
  error is     R.A.   +6.068 Decl.  +1.890
  for a total  6.155 deg

	No more O-mode.


At 21:43 -0400 4/11/11, Ibex Mission Operations wrote:
>Guys,
>       Here is the ATS for ORbit# 122.  I'm sorry for getting this out so late.
>I will need the approvals/comments by 1200 pm 12 Apr 11
>The ATS will be uploaded during the SSR_Dump contact 12 Apr 11 @ 1800 UTC
>

-- 
						- Mark     210-379-4635
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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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