NH Arrokoth (formerly Ultima Thule) Encounter Observations & Results, post-flyby discussion as the data arrives Options

[Guest_alex_k_*]

To the extent that the spectral responses of the two cameras are different, you could create a crude 2-false-colour image from those frames. You'd need to warp one frame to align them better, though.

A great idea, Fredk!
A rough attempt:
[attachment=44439:lorri_mvic4.png]
(update 2)

[HSchirmer]

I was in that session at LPSC - they are working on shape and stereo but more to do for a final shape model. Then the images can be merged effectively.

Jeff Moore said they are not convinced the small pits are impact craters, and suggest some may be drainage depressions leading into sub-surface voids. Not sure I agree, but a size distribution plot would be a useful thing to help with that problem.

Phil

Curious, if there is void filling, would the "Brasil nut effect" being temperature dependent change things?

There has been some suggestion that size sorting is temperature dependent,

http://large.stanford.edu/courses/2007/ph210/spector2/
Reverse Brazil Nut Problem

A paper by Hong et al. in 2001 predicted the "reverse Brazil nut effect", in which under certain conditions, their numerical observation showed the opposite effect - large beads falling to the bottom of a container, and small beads rising to the top of the container. [4,5] A previous finding of theirs showed that a system of hard sphere condenses in the presence of gravity below a critical temperature Tc [6].P.V. Quinn and D.C. Hong, Phys. Rev. E 62, 8295 (2000).

Rather interesting to consider the possibility of thermodynamics past Pluto driving "grain tectonics".
Imagine if the Brazil-nut effect shakes warm KBOs into minimum surface spheres; while the reverse-Brasil-nut-effect shakes cool KBOs into maximum sufrace pancake?

[alan]

Livestream here at 1 ET

https://livestream.com/viewnow/lpsc2019

[alan]

unmannedspaceflight.com was just mentioned at the press conference

[HSchirmer]

unmannedspaceflight.com was just mentioned at the press conference

Eh, names are fair when names are given...


Time Counter -12:OO
"This was posted to Unmanned Spaceflightdot com by citizen scientist Roman Tkachenko"


http://www.unmannedspaceflight.com/index.p...st&p=244187

[stevesliva]

Press conference material is up on NH website
http://pluto.jhuapl.edu/News-Center/News-A...p?page=20190318
with slides here:
http://pluto.jhuapl.edu/News-Center/Press-...page=2019-03-18

[atomoid]

more reporting coming out, this from Science News

[Guest_alex_k_*]

To the extent that the spectral responses of the two cameras are different, you could create a crude 2-false-colour image from those frames. You'd need to warp one frame to align them better, though.

Resolution is also increased.

update: improved version

[alan]

Initial results from the New Horizons exploration of 2014 MU69, a small Kuiper Belt object

https://science.sciencemag.org/content/364/6441/eaaw9771

[nprev]

Outstanding.

In addition to name-checking the forum & highlighting Roman's work, an UMSF moderator is one of the coauthors of this paper.

[Explorer1]

Though this issue is moot now, the article only says "following a significant backlash", so I don't think the final name and the New Horizons team nickname are really connected in any way. The headline writers are just looking for clicks by putting the two together.
I do wonder if the sports equipment transport company or the air base in Greenland ever got a complaint...

[tanjent]

If the new name is all right with Alan, it's certainly OK with me. I do wonder whether NASA will also be giving new names to the two individual lobes?

[nprev]

The IAU is the authority for all naming conventions, including classes of features. What might get interesting is what exactly the lobes would be classified as geologically, or if they'll come up with a new category for them.

This may have already happened with comets since 67P C-G, 103/P Hartley, and Borrely apparently consist of lobes as well, though the mechanism by which they arose may be different.

[tanjent]

More on the naming process that was followed in this instance
http://www.spacedaily.com/reports/NASA_ren...cklash_999.html
IAU had the final say, but it seems the change was initiated by the NH team itself, then passed to NASA, who then consulted the Powhatan tribal elders.

[fredk]

One problem with the name "Ultima" was that it was rather... ultimate. Even for NH, with luck Arrokoth won't be its farthest encounter and "Penultima" might've been more appropriate.

(PS - time to change the name of this thread?)