There are some excellent radar images of Asteroid 2024 ON, which passed nearby a week ago. A contact binary.
Great cite. Thank you.
Somehow I am reminded of the marauding giant Sta-Puft Marshmallow Man from Ghostbusters crossed with the Mr. Peanut character who was much more prominent in Planters Nuts’ marketing back in the 1960s and really freaked 5yo me out.
I just know I don’t want that to get close enough to hit us.
What’s that up in the sky?
It’s a bird, it’s a plane, it’s a …
Giant falling peanut?!!!??!?!
Even Underdog can’t save us now.
Size estimates that I’m seeing so far are inconsistent, but it seems to be around a thousand footer. So yeah, it would leave a mark.
It would in fact be cool to get a fresh surface impact crater big enough to be an instant tourist attraction and a huge boon / treasure trove of data to the scientists who study that stuff while at the same time being remote enough that nearly nobody is directly harmed*. And big enough to be impressive on a human scale but small enough to not trigger a worldwide or even regional eco-disaster.
* I almost wrote “impacted” instead of “harmed” but that seemed too easy a joke to make.
Given its shape and coloring, it reminds me much more of a peanut. Were we to have an unfortunate rendezvous with that peanut, it would be a super “owie” for the earth. 
Mr. Peanut was exactly what I thought of seeing those pictures, not a snowman. Just needs a top hat, monacle, and walking stick.
It was traveling at 19,842 mph (31,933 km/h), or around 26 times the speed of sound.
Speed of sound!? In space, no one can hear Mr. Peanut scream.
2024 ON would possibly produce something similar to this, if it was solid enough to not shatter in the atmosphere.
Or they could seperate from each other by a number of miles during atmospheric entry. The iron asteroid that created the Barringer crater in Arizona (3900 feet across) is estimated to have been around 150 feet. With that as a rough guide, with 2024 ON being two rocks in the roughly 500 feet range, we’re probably talking 2 ceaters in the 2 or 3 mile range. Not a planet killer, but a few cubic miles of rock in the air could be problematic.
BTW, the most recent cratering event on Earth was in 2007, but it was only around 50 feet and in soil, not rock. But it was surrounded by drama, and the meteoroid that caused it was far too small and fragile to have any right still traveling at hypervelicity when it struck and only managed it through unique (to modern knowledge) freak accident.
http://www.geotimes.org/july08/article.html?id=feature_meteorite.html
Just wanted to let you know I saw what you did there: