((2*(6.67*10^-11) * (2*10^30)*(4.1*10^6))/((9.46*10^15)*26000))^.5

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.