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2014 MU69 "Ultima Thule" flyby, For discussion of the encounter as it happens
tanjent
post Dec 29 2018, 10:20 AM
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PDP8E, in the same spirit, I predict that the soon-to-be-revealed observations will bear "some" but "not too much" resemblance to your model image.


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MahFL
post Dec 29 2018, 05:13 PM
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1.9m miles now. wheel.gif
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jasedm
post Dec 29 2018, 05:55 PM
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Were this the Saturn system, we'd be within Iapetus' orbit now...

smile.gif
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Lucas
post Dec 29 2018, 10:29 PM
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Interesting tweet from Alan... perhaps they have resolved Ultima Thule?

https://twitter.com/alanstern/status/1079111629604831233
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MahFL
post Dec 30 2018, 12:12 AM
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QUOTE (Lucas @ Dec 29 2018, 11:29 PM) *
Interesting tweet from Alan... perhaps they have resolved Ultima Thule?

https://twitter.com/alanstern/status/1079111629604831233


It seems to be something, but they are still too far out to resolve anything, except maybe if it's a binary or not ?
Also according to Emily's posted schedule no pics are due to be downloaded today.
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Alan Stern
post Dec 30 2018, 12:54 AM
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QUOTE (MahFL @ Dec 30 2018, 12:12 AM) *
It seems to be something, but they are still too far out to resolve anything, except maybe if it's a binary or not ?
Also according to Emily's posted schedule no pics are due to be downloaded today.


Emily's article is about scirct science data. But all data are useful for science, even OpNav images.....
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dtolman
post Dec 30 2018, 02:18 PM
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QUOTE (Alan Stern @ Dec 29 2018, 07:54 PM) *
Emily's article is about scirct science data. But all data are useful for science, even OpNav images.....


Squinting at where the wand is pointing in your twitter post, I'd say LORRI has resolved Ultima Thule into multiple pixels, right on schedule! I guess all will be revealed soon enough smile.gif
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fredk
post Dec 30 2018, 03:24 PM
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I don't think he can see where he's pointing.

There appears to be a vaguely ringlike structure about the centre of that image (and darkness at the very centre). My guess: they've subtracted a point-source model (PSF) from the image where MU69 is predicted to be and see a residual around it, which would suggest it's starting to be resolved.
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john_s
post Dec 30 2018, 04:49 PM
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The raw image page is now up-

http://pluto.jhuapl.edu/soc/UltimaThule-Encounter/

Enjoy!
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nprev
post Dec 30 2018, 05:15 PM
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Thanks, John. I assume that the fact that UT is near the center of the frame is a very good indication of nav accuracy...? smile.gif


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A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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nprev
post Dec 30 2018, 06:58 PM
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Spaceflight Now is going to live-blog the encounter in real time from JHAPL.


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A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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JohnVV
post Dec 30 2018, 09:11 PM
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artist's concept
do to software constraints a render of UltimaThule as a SPHERE

Attached Image

( this is basically my default KBO generator using Blender )

we will see in a few days , then something much closer to the real thing


PS.

dose anyone know of a naif spice kernel for New Horizon for the fly-by.
The last kernel ( nh_pred_alleph_od124.bsp ) has a end date of September 2018
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nprev
post Dec 30 2018, 09:52 PM
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Alan just reported on FB that they finished their last nav meeting a few minutes ago, so possible that there might be a REAL fresh one available soon.


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A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Bjorn Jonsson
post Dec 30 2018, 10:25 PM
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Interesting tidbit in the Spaceflight Now live-blog from Hal Weaver, there are some hints that Ultima Thule is a quickly-rotating object.
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Aldebaran
post Dec 30 2018, 10:56 PM
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QUOTE (Bjorn Jonsson @ Dec 30 2018, 11:25 PM) *
Interesting tidbit in the Spaceflight Now live-blog from Hal Weaver, there are some hints that Ultima Thule is a quickly-rotating object.


Could that explain the lack of light curve? (temporal resolution constraints)
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