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New Horizons Jupiter Encounter
Guest_AlexBlackwell_*
post Jan 10 2007, 09:47 PM
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I thought I'd start a new thread for this:

Jupiter Encounter Begins
January 10, 2007
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climber
post Jan 10 2007, 10:44 PM
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I didn't realize encounter will be up to June.
Do you have material yet to open such a topic for Roseta that will fligh by Mars on feb 27th?
Exciting times once again...


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djellison
post Jan 11 2007, 10:22 AM
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New Horizons launched on Jan 19th 2006 and will fly past Jupiter on Feb 28th.

Comet McNaught pass the orbit of Jupiter about 10 days after the NH Launch - and will be on the way back out, crossing the orbit of Venus when NH makes it's closest approach to Jupiter.

I don't think there's much chance of a competative race on the way back out again though ohmy.gif

Doug
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ugordan
post Jan 11 2007, 10:32 AM
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QUOTE (djellison @ Jan 11 2007, 11:22 AM) *
I don't think there's much chance of a competative race on the way back out again though ohmy.gif

Not a chance. McNaught is on a very slightly hyperbolic trajectory, but NH will be on a major solar escape trajectory after Jupiter. Poor comet doesn't stand a chance of catching up. smile.gif


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djellison
post Jan 11 2007, 10:50 AM
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To Plutonian distances - McNaught is several years behind NH - quite something really.

Doug
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general
post Jan 15 2007, 07:55 PM
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How come NH is slowing down, now that it's approaching Jupiter? Its speed used to be 20+ km/s, but the last few weeks it's down to 19.9 km/s, and going slower by the day (currently 19.84 km/s). I'd think it would go faster and faster as it is pulled towards Jupiter.
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djellison
post Jan 15 2007, 08:02 PM
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The 'sphere of influence' for Jupiter hasn't been reached yet - the actual gravity assist period isn't very long.

Doug
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climber
post Jan 15 2007, 11:43 PM
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Call it aphelium of the Hohmann orbit...
(ok, I've got some help from "The Basics of Spaceflight" for the orthograf, but what's wrong with that ?) biggrin.gif


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remcook
post Jan 16 2007, 09:36 AM
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QUOTE (climber @ Jan 15 2007, 11:43 PM) *
Call it aphelium of the Hohmann orbit...


ehm..no biggrin.gif Which aphelium? We're talking hyperbolic orbits here tongue.gif
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Bob Shaw
post Jan 16 2007, 11:49 AM
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QUOTE (remcook @ Jan 16 2007, 09:36 AM) *
ehm..no biggrin.gif Which aphelium? We're talking hyperbolic orbits here tongue.gif



Hahaha!


Bob Shaw


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climber
post Jan 17 2007, 07:18 AM
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QUOTE (Bob Shaw @ Jan 16 2007, 12:49 PM) *
Hahaha!
Bob Shaw

Hahaha !


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Guest_AlexBlackwell_*
post Jan 18 2007, 06:22 PM
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NASA Spacecraft En Route to Pluto Prepares for Jupiter Encounter
RELEASE: 07-012
NASA/JHUAPL
January 18, 2007

Zooming to Pluto, New Horizons Closes in on Jupiter
January 18, 2007

Jupiter Flyby Press Kit (1.8 Mb PDF)
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stevesliva
post Jan 18 2007, 07:08 PM
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The Jupiter & Io LORRI photo caption mentions less turbulence in the Jovian Atmosphere than expected... can someone perhaps put Jupiters seasons in perspective, along with where in the Jovian year NH is vs. when Galileo was there?

http://pluto.jhuapl.edu/gallery/missionPho...piterAndIo.html
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volcanopele
post Jan 18 2007, 07:12 PM
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I didn't think Jupiter had seasons per se, since Jupiter (and its satellites) have only a negligible axial tilt. Jupiter's cloud belts and zones go through changes in albedo and amount of turbulence all the time, and I don't think they are tied to seasons. Compare images of Jupiter from the Pioneers, Voyagers, Hubble, Galileo, and now NH.


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yaohua2000
post Jan 18 2007, 11:11 PM
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QUOTE (djellison @ Jan 16 2007, 04:02 AM) *
The 'sphere of influence' for Jupiter hasn't been reached yet - the actual gravity assist period isn't very long.

Doug


I made this page one year earlier, and could be useful:

http://en.wikipedia.org/wiki/Talk:New_Hori...ers/2006-Jan-24
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