reedef t1_jdp1shr wrote
Reply to comment by OramaBuffin in [NASA on Twitter] Newly-discovered asteroid 2023 DZ2 will pass Earth more than 100,000 miles (161,000 km) away–about half the distance to the Moon–making its close approach at 3:51 p.m. EDT (12:51 p.m. PDT) by ICumCoffee
So I started researching and Wikipedia actually has a calculation on this and for an asteroid with hyperbolic excess velocity of 12.5 km/s the effective increase of the cross sectional impact area is 80%. Not x10 or anything but not insignificant either.
The impact is going to be larger than that for objects that approach the earth from nearby orbits.
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