[Isocops] IBEX Orbit# 127 v004 ATS - approve

[Mark Tapley]

All,
	I have looked at the Orbit 127 ATS v00 
(IBEX_2011_148_00_00_v004.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. All other constraints are 
addressed by v004.

	The PL commands in the ATS v004 match the STF v003 file 
(IBEX_2011_148_23_42_v003.stf), per Ken's script (Thanks, Ken!).

	PL ascending and descending operations make sense with 
respect to 15 Re ascending and descending times respectively.

	No Moon in -Lo FOV PMT setback commands, and none needed per the .oef.

	Ground station contact times match S/C transmitter-on times 
for the first 5 contacts; other contacts will be added later.

	No battery cell balancing commands for this odd-numbered orbit.

	Inertial sun-pointing maneuver at the end of this orbit 
deleted, since it takes us farther away from the direction the 
maneuver pointing will take us to shortly thereafter.

	At end orbit 126, we pointed at:

R.A.  +65.951 Decl. +21.596  2011/05:28:13:01:12

	At end orbit 127, we would point to:

R.A.  +73.781 Decl. +22.598  2011/06:05:03:18:22

	And then for the maneuver, we would point back to:

R.A.  +59.934 Decl. +42.848  2011/06:05:08:58:00

	so it would save fuel and time to skip that middle repoint.

Full output from ibex-rotate below.

[tapley at ena ~]$ ibex_rotate -o -u 
0.2578611072721038,0.8864840220507132,0.3842573720895872 -w ibex-sun 
-t 2011/06:05:03:18:22
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.257861,+0.886484,+0.384257
  which is     R.A.  +73.781 Decl. +22.598
  missing      R.A.  +72.660 Decl. +22.470 (ibex-sun)
  error is     R.A.   +1.121 Decl.  +0.128
  for a total  1.044 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.367307,0.634513,0.680058 -t 
2011/06:05:08:58:00Quaternion 
+0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.367307,+0.634513,+0.680058
  which is     R.A.  +59.934 Decl. +42.848
  missing      R.A.  +72.878 Decl. +22.508 (0.367307,0.634513,0.680058)
  error is     R.A.  +12.944 Decl. +20.341
  for a total  23.011 deg
[tapley at ena ~]$ ibex_rotate -o -u 
0.3789135096089718,0.8490897984687159,0.3680639433198629 -t 
2011/05:28:13:01:12
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.378914,+0.849090,+0.368064
  which is     R.A.  +65.951 Decl. +21.596
  missing      R.A.  +64.886 Decl. +21.421 
(0.3789135096089718,0.8490897984687159,0.3680639433198629)
  error is     R.A.   +1.065 Decl.  +0.175
  for a total  1.006 deg

	No more O-mode.

	PL ramps HV down to OFF at 15 Re descending.

	Only the last command from Orbit 126 overlaps, per 
http://ibex.unh.edu/cgi-bin/ats.cgi. That command is

@ECT_SetRelay stx,off $TIME=2011/05:29:00:07:00

Which is OK per previous practice.

	Command Approval Checklist attached.


At 16:52 -0400 5/19/11, Ibex Mission Operations wrote:
>Guys,
>    Here is V004 of the ATS for Orbit# 127.  We will omit the 
>Inertial Maneuver in Orbit# 127 in preperation for the maintenance 
>maneuver
>
>On Thu, May 19, 2011 at 2:31 PM, Ibex Mission Operations 
><<mailto:ibexops at gmail.com>ibexops at gmail.com> wrote:

-- 
						- Mark     210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
technology adequate to stop them:

				Think of it as Evolution in Fast-Forward.
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