[Isocops] IBEX Orbit# 89 ATS (11 - 19 Aug 10)

Mark Tapley mtapley at swri.edu
Mon Aug 2 17:28:38 EDT 2010


All,
	looked over the ATS; I approve.

	IBEX-Lo PMT levels are reduced over a span centered within 
the moon-in-FOV prediction, with the prediction overlapping by about 
an hour and a half either end.

	Ascending and Descending macros execute at proper times WRT 
15-RE crossings.

	Times for contacts match ground times to ~6 seconds before 
clock set and to ~0 seconds after.

	I'm curious, after the data-dump contact and the inertial 
pointing, will the batteries be partially discharged? That's when the 
battery cell-balancing operation starts.

	The pointing maneuver from the last ATS points us in safe 
directions for this ascent and descent (assuming it worked within 1.3 
degrees of how it was supposed to):

[tapley at ena ~]$ ibex_rotate -o -u 
-0.7605915023455401,0.5955181949147713,0.2585703890340242 -w ibex-sun 
-t 2010/08:12:01:38:40
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.760592,+0.595518,+0.258570
  which is     R.A. +141.940 Decl. +14.985
  missing      R.A. +141.534 Decl. +15.111 (ibex-sun)
  error is     R.A.   +0.406 Decl.  +0.126
  for a total  0.412 deg
[tapley at ena ~]$ ibex_rotate -o -u 
-0.7605915023455401,0.5955181949147713,0.2585703890340242 -w ibex-sun 
-t 2010/08:18:22:34:22
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.760592,+0.595518,+0.258570
  which is     R.A. +141.940 Decl. +14.985
  missing      R.A. +147.998 Decl. +12.922 (ibex-sun)
  error is     R.A.   +6.058 Decl.  +2.063
  for a total  6.230 deg

and the pointing maneuver for this ATS will point us in safe 
directions for the following orbit (assuming it works and according 
to times in the Forecast .oef 
IBEX_2010_Forecast_15July10-23Oct10_v001.oef):


[tapley at ena ~]$ ibex_rotate -o -u 
-0.838435174952733,0.49988680035188543,0.2171166604292126 -w ibex-sun 
-t 2010-08-19T14:02:38.162Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.838435,+0.499887,+0.217117
  which is     R.A. +149.196 Decl. +12.540
  missing      R.A. +148.570 Decl. +12.754 (ibex-sun)
  error is     R.A.   +0.626 Decl.  +0.215
  for a total  0.647 deg
[tapley at ena ~]$ ibex_rotate -o -u 
-0.838435174952733,0.49988680035188543,0.2171166604292126 -w ibex-sun 
-t 2010-08-26T20:09:43.012Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.838435,+0.499887,+0.217117
  which is     R.A. +149.196 Decl. +12.540
  missing      R.A. +155.269 Decl. +10.261 (ibex-sun)
  error is     R.A.   +6.073 Decl.  +2.279
  for a total  6.374 deg


At 18:31 -0400 8/1/10, Ibex Mission Operations wrote:
>Guys,
>     Please review the ATS for Orbit# 89 (11 - 19 Aug 10).  The ATS 
>will be uploaded during perigee of Orbit# 87
>
>Orbit# 87 Perigee Contacts are listed below in UTC
>IBEX,AUWA01,ADD,08/03/10,215,16:00:00,08/03/10,215,16:35:00,,LAHO 
>320K IBEX Orbit# 87 SSR_Dump/Tracking Contact
>IBEX,USHI01,ADD,08/04/10,216,06:00:00,08/04/10,216,06:35:00,,LAHO 
>64K IBEX Orbit# 87 Tracking Contact
>
>
>
>--
>Sheral R. Wesley
>SPVR., Satellite Operations
>IBEX Mission OPS
>(304) 279-6678
>
>
>Content-type: text/plain; charset=US-ASCII; name=IBEX_2010_223_00_00_v001.txt
>Content-transfer-encoding: 7BIT
>Content-disposition: attachment; filename=IBEX_2010_223_00_00_v001.txt
>X-Attachment-Id: f_gccfs6220
>
>Attachment converted: Eowyn:IBEX_2010_223_00_00_v001.txt (TEXT/QED1) 
>(00607708)
>Content-type: application/octet-stream; name=IBEX_2010_223_00_00_v001.ccvr
>Content-disposition: attachment; filename=IBEX_2010_223_00_00_v001.ccvr
>X-Attachment-Id: f_gccftbq21
>
>Attachment converted: Eowyn:IBEX_2010_223_00_00_v001.ccvr (    / 
>) (00607709)
>Content-type: application/octet-stream; name=IBEX_2010_Orbit89_v001.oef
>Content-disposition: attachment; filename=IBEX_2010_Orbit89_v001.oef
>X-Attachment-Id: f_gccfto9v2
>
>Attachment converted: Eowyn:IBEX_2010_Orbit89_v001.oef (    /    ) (0060770A)
>Content-type: text/plain; charset=US-ASCII; name="IBEX_Orbit 89.txt"
>Content-transfer-encoding: 7BIT
>Content-disposition: attachment; filename="IBEX_Orbit 89.txt"
>X-Attachment-Id: f_gccfvtya3
>
>Attachment converted: Eowyn:IBEX_Orbit 89.txt (TEXT/QED1) (0060770B)


-- 
						- 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.



More information about the Isocops mailing list