Crater size formula please

[Ender]

Can anyone provide the formula for calculating crater size from a surface detonation in a vacuum? I don't so much need the formula as I need the distace from the hypocenter where the 15psi wave will be felt and I don't know how that would even work. Basic Iron asteriod if it matters

[Ender]

Specifically, I know crater radius is proportional to square root of yield, but what is the proportionality?

[Sea Skimmer]

Can anyone provide the formula for calculating crater size from a surface detonation in a vacuum? I don't so much need the formula as I need the distace from the hypocenter where the 15psi wave will be felt and I don't know how that would even work. Basic Iron asteriod if it matters

You can't have a shockwave in a vacuum, and ignoring that radius of a shockwave doesn’t have much of anything to do with how big a crater you get, other then that both get bigger with yield.

In the atmosphere a crater represents where the nuclear fireball has touched the surface. In a vacuum there is no fireball, just radiation, which I suspect, would give a much wider shallower crater. I don’t think you'll find any formula for this.

[CaptainChewbacca]

I can predict crater size with object and velocity, but not your blast-path.

Just know that if you're hitting an asteroid with an asteroid, the ejecta blanket is going to be BIG.

[AdmiralKanos]

If you want a crater, you need a surface-penetrating weapon. Cratering is calculated for optimum charge burial depth. Otherwise you just get surface boiling.

[AdmiralKanos]

I can predict crater size with object and velocity, but not your blast-path.

What sources are you using? That could be interesting.

Just know that if you're hitting an asteroid with an asteroid, the ejecta blanket is going to be BIG.

He's talking about setting off a nuke on the surface, not playing space billiards.