Calculadora de Energia de Impacto de Asteroide — Formula
## Asteroid Impact Energy
The kinetic energy of a spherical impactor:
**KE = 0.5 × m × v²**
where **m = (π/6) × d³ × ρ** (sphere mass)
- d = diameter
- ρ = density (rock: ~3000, iron: ~7800 kg/m³)
- v = impact velocity (typical 15-25 km/s for near-Earth asteroids)
1 megaton TNT = 4.184 × 10¹⁵ J. The Chicxulub impactor (~10 km) released ~10¹⁴ Mt.
The kinetic energy of a spherical impactor:
**KE = 0.5 × m × v²**
where **m = (π/6) × d³ × ρ** (sphere mass)
- d = diameter
- ρ = density (rock: ~3000, iron: ~7800 kg/m³)
- v = impact velocity (typical 15-25 km/s for near-Earth asteroids)
1 megaton TNT = 4.184 × 10¹⁵ J. The Chicxulub impactor (~10 km) released ~10¹⁴ Mt.
Exemplo Resolvido
A 100 m rocky asteroid at 20 km/s.
- Mass = (π/6) × 100³ × 3000 = 1.571e9 kg
- KE = 0.5 × 1.571e9 × (20000)²
- = 0.5 × 1.571e9 × 4e8 = 3.14e17 J
- ≈ 75 megatons TNT (larger than any nuclear weapon tested)