2
$\begingroup$

Has any official information been published regarding the estimated age of the Occator crater on Ceres? I ran some quick searches but couldn't find anything putting a definitive (or even speculative) date on the moment of impact.

I ask because based upon my own very amateur analysis of the imagery:

enter image description here

...there seems to be a marked decrease in the amount of secondary cratering visible within a fairly uniform radius of the main crater.

My assumption is that when the impact occurred, the surrounding area was likely blanketed by material kicked up from the impact site, obscuring most pre-existing craters (smaller ones, in particular). Kind of like fresh snowfall, except made of rock.

So for a (small) secondary crater to be visible near Occator, the impact would have to have occurred after the impact that created Occator crater. Meaning that the relative lack of small craters near Occator would seem to imply a fairly recent impact ("recent" in terms of Ceres geological timescales), I believe?

Is there any official data that would confirm or refute this?

$\endgroup$
2
$\begingroup$

It seems not yet. The non-uniform density of craters seen on Ceres is still under investigation. From the abstracts of those papers, they're still working on trying to date the ejecta material from that crater, and trying to understand the resurfacing that appears to be going on.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.