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Dawn's first orbit, including RC3, March 6, 2015- June 15, 2015
nprev
post May 8 2015, 07:44 PM
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Those look a lot more like data dropouts or something else far more mundane than mini-moons or caves. Let's please not jump right to the most exciting (and improbable) conclusions here. wink.gif


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Gladstoner
post May 8 2015, 07:58 PM
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Is the latest image true 1x1 aspect ratio? It may be my imagination, but Ceres here seems a bit stretched north-south. If I recall, the released February 19 rotation sequence was slightly stretched in such a manner.
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Gladstoner
post May 8 2015, 10:25 PM
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QUOTE


After a bit of staring.... The north pole is at mid terminator at the top - FYI.
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Gladstoner
post May 8 2015, 11:06 PM
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A thought....

There appears to be a number of broad depressions with soft edges scattered all over the surface that remind me of grabens. For a lack of a better term, I've nicknamed them 'soap dishes'. A few of these are contained within large craters and basins, possibly with associated 'mounds' (horsts?).

Having said that.... In the latest image, a crater with a bright wall appears to be on or near the rim of one of these 'soap dishes' (in the large crater on the left). Is this association coincidence, or could this be a clue to whatever processes produced the bright areas here and elsewhere?

If these 'soap dishes' are grabens, the long rim of one would mark a fault in the crust. Such a fault (fracture zone) could potentially serve as a conduit for material rising from below at any time, even if the graben itself is extremely ancient. The material movement likely would have happened in the distant past as well, though.
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wildespace
post May 10 2015, 08:41 AM
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Catalogue entries for PIA19336 and PIA19337 have been reassigned to PIA19536 and PIA19537 respectively. Anyone got any idea why? They were listed in Emily's blog: http://www.planetary.org/blogs/emily-lakda...dawn-ceres.html under their old designations, so I'm giving a heads up in case anyone will want to look for them again.


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Gladstoner
post May 10 2015, 10:49 PM
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The feature here:

Attached Image


May be the same as this:

Attached Image
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belleraphon1
post May 11 2015, 01:58 PM
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RC3 May 4th Rotation
http://photojournal.jpl.nasa.gov/catalog/PIA19547
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jgoldader
post May 11 2015, 02:45 PM
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QUOTE (belleraphon1 @ May 11 2015, 08:58 AM) *


Well, they're resolved now! But... deposits?...or a snowball that went splat? blink.gif
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Floyd
post May 11 2015, 02:45 PM
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Lots of little white spots showing up around the globe--not just next to the "two" big spots in region 5. Little white spots--whatever they are--are common on Ceres.


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Habukaz
post May 11 2015, 02:52 PM
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Wow, there's a lot of stuff to take in in that animation. I note that it looks like the dark area to the east of the brightest stuff is back; which now looks a bit like it is asymmetrically centred on that crater.

Attached Image

And then of course, those long rifts - or whatever the appropriate terminology is.


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hendric
post May 11 2015, 02:57 PM
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Yeah, I give up, I have no clue what the heck double-white-spot is. unsure.gif The closer we get, the weirder it looks!


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Phil Stooke
post May 11 2015, 03:15 PM
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My version of this new image. The 'rifts' look a lot more like secondary crater chains to me.

Phil

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Habukaz
post May 11 2015, 03:28 PM
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Looking at them again, that explanation makes sense. They look like rifts/valleys when they are on the right hand side of the frame (like in the image below), and then appear to dissolve/disappear when are on the left, so maybe the rift-like appearance is caused by a deceiving viewing angle.

Attached Image


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elakdawalla
post May 11 2015, 03:29 PM
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Some of those "rifts" look a lot like those on Rhea -- I forget what the current thought is on those, are they thought to be secondaries? (Paul Schenk, are you lurking here?)


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MarsInMyLifetime
post May 11 2015, 03:31 PM
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QUOTE (hendric @ May 11 2015, 09:57 AM) *
Yeah, I give up, I have no clue what the heck double-white-spot is. unsure.gif The closer we get, the weirder it looks!

The off-center 'dot' now has a constellation of smaller surrounding dots, and the central dot now has two components (see attachment). So along with the dark, asymmetric pattern to the side, I'm inclined to look at this as a very recent strike from a broken object, but this does not align with the purported elevation reports.

Attached Image


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