The Roche Limit

[SOLVED] The Roche Limit

What's hte formula for the Roche Limit? I can't find it any where!

Staff Emeritus
Gold Member
RL = 2.423Rp(dp/dm)1/3

where

RL is the Roche Limit
Rp is the radius of the planet
dp is the density of the planet
dm is the density of the moon.

if the moon and planet are of equal density, it reduces to

RL = 2.423Rp

thanks

Thanks for that