User blog:LordTracer/Heartstone Splits the Moon

Based on this calc, which was based on this calc.

Radius of Moon - 1.737125914e+6 m

Half the Mass of Moon - 7.3476731e+22 / 2 = 3.6738365e+22 kg = m = M

Gravitational Constant - 6.674×10^(−11)

GPE=GMm/r

GPE of Moon = 6.674×10^(−11) x 3.6738365e+22 x 3.6738365e+22 / (2 x 3/8 x 2439700) = 4.922981e+28

GPE of split Moon = 6.674×10^(−11) x 3.6738365e+22 x 3.6738365e+22 / (2 x 3/8 x (2439700 + 1000)) = 4.920964e+28

4.922981e+28 - 4.920964e+28 = 2.017e+25 joules, which is High 6-A, aka Multi-Continent level