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KBO encounters
dilo
post Sep 8 2012, 01:14 PM
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Based on these plots, they should be able to make correction maneuvers and science activities until early 2024 (59 au) and downlink data until 2029 (74 au).
Moreover, if mission extension will be financed, I'am pretty confident they will be able to further improve these margins by optimizing operations (as done on Voyager)


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hendric
post Sep 9 2012, 02:04 AM
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Alan,
Do those power margins account for shutting down unnecessary systems as NH ages? Or is the technology good enough now (I'm an embedded engineer myself) that a low-power mode for an instrument is essentially near-zero power?


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Alan Stern
post Sep 9 2012, 09:18 AM
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The figures in Glen Fountain's paper do not include measures we can take to extend mission duration, which we now estimate will take us to the mid-late 2030s. However, those measures do not generally include low power instrument modes, as most NH instruments do not have them.


QUOTE (hendric @ Sep 9 2012, 02:04 AM) *
Alan,
Do those power margins account for shutting down unnecessary systems as NH ages? Or is the technology good enough now (I'm an embedded engineer myself) that a low-power mode for an instrument is essentially near-zero power?

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Paolo
post Sep 9 2012, 12:51 PM
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this in interesting: the search for candidate KBOs continues to provide some "collateral" discoveries
Discovery and Characterization of an L5 Neptune Trojan in the Search for a New Horizons Encounter Candidate
and it may also receive some distant (180 million km) observations
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morganism
post Sep 10 2012, 11:36 PM
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Am a big fan of the KBO post encounter, and threw in some time at Ice Hunters, but would trade it all for a trajectory change to get more info on Uranus or Neptune.

That red trojan looks interesting tho, and nearly a 30 deg inclination is crazy!

Am specifically interested if there are any flux tube re-connections out there.

OPAG doesn't look like they will be chosen in time to still have any specialty scientists still around to study an ice giant.....


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Tom Tamlyn
post Sep 11 2012, 06:13 AM
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QUOTE (morganism @ Sep 10 2012, 06:36 PM) *
Am a big fan of the KBO post encounter, and threw in some time at Ice Hunters, but would trade it all for a trajectory change to get more info on Uranus or Neptune.

<cough>

I've attached a diagram showing the positions of the outer planets at the time of New Horizon's Pluto encounter, together with a cone indicating the outer limits of NH's ability to change course after the encounter. The diagram is figure 14 from Guo and Farquhar, New Horizons Mission Design (2007), available at http://www.boulder.swri.edu/pkb/.
Attached File  nh.cone.pdf ( 62.03K ) Number of downloads: 477
*
Keeping in mind the narrowness of the cone, the positions on the diagram of Uranus and Neptune, and of course the fact that Uranus and Neptune will continue to march, "rank on rank," as members of "[t]he army of unalterable law" ** further counterclockwise from the Pluto rendezvous point ... what kind of trajectory change are you talking about?

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TheAnt
post Sep 12 2012, 06:30 PM
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QUOTE (Tom Tamlyn @ Sep 11 2012, 08:13 AM) *
... what kind of trajectory change are you talking about?


I guess that would have to be the kind of trajectory change that involved the reverse gear. rolleyes.gif
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udolein
post Sep 20 2012, 06:09 PM
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Candidate for post-Pluto encounter - Plutino 15810:

A possible post-Pluto flyby target for NASA’s New Horizons spacecraft?

Cheers, Udo


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centsworth_II
post Sep 20 2012, 07:21 PM
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QUOTE (udolein @ Sep 20 2012, 02:09 PM) *
Candidate for post-Pluto encounter - Plutino 15810...

The amateur search for post Pluto targets is no longer hosted by Zooniverse as mentioned in both the linked article and the Planetary Society blog post (linked in the article). It is now at http://cosmoquest.org/ as Ice Investigators.

In any case there are not currently any images available to search in. I guess Pamela Gay has her work cut out getting word out about Cosmoquest.
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brellis
post Oct 10 2012, 11:38 PM
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Looks like there is a pre-Pluto target smile.gif PS article on the Ice Hunters
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Explorer1
post Oct 11 2012, 02:06 AM
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Looks like the actual photos won't be any better then that asteroid a few years ago;, but I'm sure the team will take what they can get. Not like a detour is possibly anyway...
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centsworth_II
post Oct 11 2012, 02:18 AM
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QUOTE (brellis @ Oct 10 2012, 07:38 PM) *
Looks like there is a pre-Pluto target...

I see at least one UMSF contributor there.

"Along with the New Horizons search team, the citizen scientists of Ice Hunters assisted in identifying 2011 HM102 in recovery images. The names of those that detected 2011 HM102 are listed below:
...
T. Demko ..."
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tdemko
post Oct 12 2012, 12:08 AM
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My KBO L5 Neptune Trojan identifying skills seem to have been much better than my spherule mineralogy identifying skills. wink.gif

Minor Planet Electronic Circular for 2011 HM102


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centsworth_II
post Apr 16 2013, 02:09 AM
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QUOTE (tdemko @ Oct 11 2012, 08:08 PM) *
My KBO L5 Neptune Trojan identifying skills seem to have been much better than my spherule mineralogy identifying skills. wink.gif
And now your name appears, along with other Ice Hunters, in appendix A of this paper. (PDF)
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tdemko
post May 7 2013, 04:33 PM
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It's nice to know that I contributed, in some small fashion, to the exploration of the solar system and beyond. The Ice Hunters project was very well designed, both from a contributor and end-user standpoint, and I hope that there are other similar opportunities for direct involvment in missions and data analysis. I hope that there will be imaging opportunites for New Horizons to view L5 Neptune Trojan 2011 HM102...it will be like connecting with someone you've only had a fleeting glimpse of, but now have the chance to learn much more!


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