[Isocops] IBEX Orbit# 179 ATS v001 - approve - no contact or -Lo commands

Tue Aug 28 13:29:00 EDT 2012

All,
	I have looked at the Orbit 179 ATS v001 (No -Lo commands)

IBEX_2012_253_o0179a_v001.txt

and I approve.

	No constraint violations per .ccvr file:

IBEX_2012_253_o0179a_v001.ccvr

	The PL commands in the ATS v001 match the STF v002

IBEX_2012_253_o0179a_v002.stf

per Ken's script (thanks!).

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

IBEX_2012_253_o0179a_v001.oef

	Star tracker outage near perigee does occurs after inertial maneuver.

	No Moon in -LO FOV.  (No -Lo commands this load).

	No Ground station contact commands, Contacts file shows when 
blind acqs (to save command space) will take place.

	Battery cell balancing this orbit; Skipped last orbit, need 
to do this next orbit as well. Star tracker outage during balancing 
is irrelevant; no other events within 1.5 hours.

	Inertial maneuver at the end of orbit 178 left us pointing in 
a safe direction for ascending and descending macros during first 
half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u -0.964215,0.248035,0.093639 -w 
ibex-sun -t 2012/09:09:22:00:15
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.964215,+0.248035,+0.093639
  which is     R.A. +165.574 Decl.  +5.373
  missing      R.A. +168.409 Decl.  +4.982 (ibex-sun)
  error is     R.A.   +2.835 Decl.  +0.391
  for a total  2.850 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.964215,0.248035,0.093639 -w 
ibex-sun -t 2012/09:13:14:14:33
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.964215,+0.248035,+0.093639
  which is     R.A. +165.574 Decl.  +5.373
  missing      R.A. +171.685 Decl.  +3.552 (ibex-sun)
  error is     R.A.   +6.111 Decl.  +1.821
  for a total  6.359 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 -0.981812,0.178797,0.063853 -w 
ibex-sun -t 2012/09:13:15:58:21
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.981812,+0.178797,+0.063853
  which is     R.A. +169.679 Decl.  +3.661
  missing      R.A. +171.751 Decl.  +3.524 (ibex-sun)
  error is     R.A.   +2.072 Decl.  +0.137
  for a total  2.072 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.981812,0.178797,0.063853 -w 
ibex-sun -t 2012/09:13:17:33:27
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.981812,+0.178797,+0.063853
  which is     R.A. +169.679 Decl.  +3.661
  missing      R.A. +171.811 Decl.  +3.498 (ibex-sun)
  error is     R.A.   +2.132 Decl.  +0.163
  for a total  2.134 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.981812,0.178797,0.063853 -w 
ibex-sun -t 2012/09:18:05:54:53
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.981812,+0.178797,+0.063853
  which is     R.A. +169.679 Decl.  +3.661
  missing      R.A. +175.946 Decl.  +1.750 (ibex-sun)
  error is     R.A.   +6.267 Decl.  +1.911
  for a total  6.545 deg

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

[tapley at ena ~]$ ibex_rotate -o -u -0.99387,0.105828,0.031969 -w 
ibex-sun -t 2012/09:18:13:04:06
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.993870,+0.105828,+0.031969
  which is     R.A. +173.922 Decl.  +1.832
  missing      R.A. +176.208 Decl.  +1.645 (ibex-sun)
  error is     R.A.   +2.286 Decl.  +0.187
  for a total  2.293 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.99387,0.105828,0.031969 -w 
ibex-sun -t 2012-09-23T06:35:03.553Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.993870,+0.105828,+0.031969
  which is     R.A. +173.922 Decl.  +1.832
  missing      R.A. +180.363 Decl.  -0.193 (ibex-sun)
  error is     R.A.   +6.441 Decl.  +2.025
  for a total  6.751 deg

	No -Lo O-mode (or any) Commands.

	No overlap to orbit 178 commands apparent by manual check or 
by reference to http://ibex.unh.edu/cgi-bin/ats.cgi .

	Command Approval Checklist attached.

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

At 21:13 -0400 8/27/12, Ibex Mission Operations wrote:
>Guys,
>     Here are the planning files and ATS for ORbit# 179
>All comments/approvals are required by 30 Aug 12 @1200 UTC
>
>Please note the following:
>1. This ATS contains NO IBEX_Lo Commands.  IBEX_Lo commands will be 
>uploaded during Orbit# 178 Perigee (8 Sept - 10 Sept 12)
>2. All contact commands have been omitted to conserved time tagged 
>command space onboard the spacecraft
>Contacts will be treated as Blind_acq contacts until we have 
>successfully recovery IBEX_Lo

-- 
						- 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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