[Isocops] IBEX Orbit# 114 SSR_Dump Contact 25 Feb 11 @ 1945 UTC
Mark Tapley
mtapley at swri.edu
Fri Feb 25 19:05:31 EST 2011
Not surprisingly, pointing looks good for ascent, descent following,
and at the time of the maneuver, respectively:
[tapley at ena ~]$ ibex_rotate -o -u 0.925310,-0.352226,-0.140492 -w
ibex-sun -t 2011-02-26T09:27:24.224Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.925310,-0.352226,-0.140492
which is R.A. +339.160 Decl. -8.076
missing R.A. +338.996 Decl. -8.818 (ibex-sun)
error is R.A. +0.165 Decl. +0.742
for a total 0.759 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.925310,-0.352226,-0.140492 -w
ibex-sun -t 2011-03-05T07:06:13.426Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.925310,-0.352226,-0.140492
which is R.A. +339.160 Decl. -8.076
missing R.A. +345.445 Decl. -6.241 (ibex-sun)
error is R.A. +6.285 Decl. +1.835
for a total 6.500 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.925310,-0.352226,-0.140492 -w
ibex-sun -t 2011-02-25T18:36:00.000Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.925310,-0.352226,-0.140492
which is R.A. +339.160 Decl. -8.076
missing R.A. +338.383 Decl. -9.091 (ibex-sun)
error is R.A. +0.777 Decl. +1.015
for a total 1.273 deg
At 16:20 -0500 2/25/11, Ibex Mission Operations wrote:
>Guys,
> Here are the current J2000 Target Vectors after the inertial
>maneuver 25 Feb 11 @ 1836 UTC
>The ATS for ORbit# 116 was uploaded and the SSR was dumped with (0) errors
>VC1=1492/1
>VC2= 19532/0
>
>
>J2000 Spin Axis ECI X 0.925310 ECI Y -0.352226 ECI Z -0.140492
>
>0.60505400 ActNor.EstInrToBdy[0] 0.45183600 ActNor.EstInrToBdy[1]
>0.35135200 ActNor.EstInrToBdy[2] 0.55344900 ActNor.EstInrToBdy[3]
> 982699000.000 ActNor.EstTime
>
>IBEX Spin Zxis (+Z S/C) Right Ascension - RA 339.160 deg Declination
>- DEC -8.076 deg IBEX Spin Axis vs. Sun Vector
>IBEX Sun Angle 1.091 deg
>
>
>Precession Maneuver MPS Diff 0.631 deg MPS Diff should be < 1.5
>
>
>--
>Sheral R. Wesley
>SPVR., Satellite Operations
>IBEX Mission OPS
>(304) 279-6678
--
- Mark 210-379-4635
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