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by FredPret 1045 days ago
I plugged this into neal.fun/asteroid-launcher.

I'm not sure if I did it right (I used the 15.84 km/s as impact speed, picked 45 deg impact, and an iron asteroid). It's certainly serious - millions dead - especially if it hits Manhattan as neal.fun seems to invite you doing, but not world-ending.
1 comments
ortusdux 1045 days ago
I used the Earth Impact Effects Program calc w/ 90 deg impact, rock asteroid, and 15km/s.

https://impact.ese.ic.ac.uk/cgi-bin/crater.cgi?dist=100&diam...

4 mile crater, 2300 MT of TNT equiv. so about 45 Tsar Bombas.

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H8crilA 1045 days ago
Where did you find the mass/size?
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ortusdux 1045 days ago
I had to guess without albedo data, but an H of 19.2 puts it in the 0.4 to 0.5 km range, so 400m could be on the conservative side. If it randomly has an albedo of 0.05, it could be as large as 0.96km

https://cneos.jpl.nasa.gov/tools/ast_size_est.html

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