Odds are the chance of impact will go to zero in a few more days. Sure would be great for Mars geologists to have a fresh crater maybe cutting down to some permafrost.
In the meantime, NASA can look for new craters made by objects too small to detect while still in solar orbit.
NASA Briefing: NASA Images Suggest Water Still Flows in Brief Spurts on Mars
NASA | 6 December 2006
Posted on 12/06/2006 1:46:00 PM EST by bd476
http://www.freerepublic.com/focus/f-news/1749378/posts
http://www.nasa.gov/mission_pages/mars/images/pia09020.html
[snip] The first fresh impact site, shown on this page, was first noticed on Jan. 9, 2006, in an image acquired three days earlier. The image was acquired by the wide-angle camera at its highest possible spatial resolution, about 240 meters (262 yards) per pixel. To the northwest of the area imaged by the narrow-angle camera, the red, wide-angle context frame showed a dark spot. This spot was not present in any previous image acquired by any spacecraft, from Mariner 9 (which arrived in 1971) on down through Mars Express (which arrived in 2003). [end]