# Escape velocity Calculator

## Calculates the escape velocities from the planet and from the solar system.

 the planet Sun Mercury Venus Earth Moon Mars Itokawa (Asteroid) Ceres (Asteroid) Jupiter Saturn Uranus Neptune Mass M kg radius r km Orbit radius R AU kg Gravity G the first cosmic velocity V1 km/sOrbit around the planet the second cosmic velocity V2 km/sEscape velocity from the planet orbital speed Vc km/s orbital period Tc year the third cosmic velocity V3 km/sEscape velocity from the solar system
 The third cosmic velocities of the Sun and the moon are calculated as the escape velocities from the galaxy and the Earth respectively.　Earth's mass=5.974E24　Sun's mass=1.989E30　Galaxy's mass=2.8E41$\normal Escape\ velocity\\(1)\qquad V_1=\sqrt{\frac{GM}{r}},\hspace{40}V_2=\sqrt{\frac{2GM}{r}}=\sqrt{2}V_1\\(3)\qquad Vc=\sqrt{\frac{GMc}{R}},\hspace{35}V_3=\sqrt{\frac{2GMc}{R}}=\sqrt{2}Vc\\(5)\qquad Tc=2\pi\sqrt{\frac{R^3}{GMc}}\\$

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