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Pluto Surface Observations 2: NH Post-Encounter Phase, 10 Oct 2015- 1 Feb 2016
ZLD
post Jan 27 2016, 09:01 PM
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Short notice here but in a half an hour from now (15h00-CST) there will be a presentation from Alan Stern about New Horizons at the Small Bodies Assessment Group 2016 meeting. Not sure if there will be a published recording of the event afterward. If there is, I will post it here as well.

Agenda (pdf)

Live video feed


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ZLD
post Jan 28 2016, 02:43 PM
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The presentation from yesterday can be watched at this link. Not a lot to update from the presentation. There was a better water distribution map presented that I hadn't yet seen myself and also a red-blue 3D version of PIA19955. Also, as Emily posted in the other thread, they have another informal name they are using for 2014MU69 - JimGreen, after Jim Green, Director of the Planetary Science Division at NASA, who apparently hasn't yet initiated a naming contest for the KBO as requested.


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alan
post Jan 28 2016, 05:19 PM
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Screen capture of water ice from Stern's presentation
Attached Image

Stern noted that despite its broad extent there is no mention in the literature of its detection from ground based telescopes.
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Gladstoner
post Jan 28 2016, 11:42 PM
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Water ice on Pluto:

http://www.nasa.gov/image-feature/pluto-s-...pread-water-ice
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Gladstoner
post Jan 28 2016, 11:59 PM
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It's interesting how an otherwise unassuming and seemingly random spot shows up dramatically in the water-ice imagery:

Attached Image


One possibility that comes to mind is a warm spot free of more volatile ices, but I'd think that would show up in the visible-light image.
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jccwrt
post Jan 29 2016, 12:36 AM
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It seems like there's a few things that it may correspond to in that image. For example, there appears to be more water in surfaces covered with the reddish material, so temperature might be a factor. It also looks like there's a higher concentration in the area with chained pits, so it might be a surface unit more rich in water ice. Finally, one of the spots is associated with a couple(?) of fresh craters(?), so it might also be deeper material blasted out that hasn't had time to accumulate a coating of more volatile ices.
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alan
post Jan 29 2016, 09:04 PM
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I wonder why the eastern parts of Cthulhu Regio have less than other parts? Older terrain->more tholins? Circulation patterns? Elevation?
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nprev
post Jan 29 2016, 09:11 PM
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MOD NOTE: We're gonna start a third Pluto Surface Observations thread this weekend in order to keep these sections at a manageable and searchable size. A notice will be posted here with a link to the new thread when that happens. Thanks! smile.gif


EDIT: New thread now live for observations received after 1 Feb 2016.


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