Awesome catch LJ.
I was going to comment on it but I thought I would leave that up to the experts or the more informed.
We need to know the geology of the impact area.
If that crater is in a sand dune area then the crater must be recent otherwise the movement of the dune would have distorted the crater. The only way that could be an old crater is if the impact area is solid ground with a layer of sand that blows and that might count for the lack of a raised rim around the crater.

Looks like it was a perpendicular impact to form the near perfect circle. I don't see any ejecta signs, but that white spot on the crater wall is interesting.

Well, that's enough trouble for me to get into.

BTW, What sol was this?