Escape and Orbital Speed Calculator
Escape & Orbital Speed Calculator
Mass: kg
Radius: m
🚀 Formulas Used
Escape Speed: $v_e = \sqrt{\dfrac{2GM}{R}}$
Orbital Speed: $v_o = \sqrt{\dfrac{GM}{R}}$
Where:
- G = 6.674 × 10⁻¹¹ N·m²/kg² (gravitational constant)
- M = Mass of the planet or celestial body
- R = Distance from the centre of the body (radius)
🌍 What's the Difference?
Orbital Speed is the minimum speed required to stay in a stable circular orbit around a planet.
Escape Speed is the speed needed to break free from a planet’s gravity — with no further thrust.
In short:
- Orbital speed keeps you circling
- Escape speed lets you fly away
Learn more:
Launch Escape Systems by Liquid Bird
Read on SubstackGoing to space "without" rockets? Part 2 by Liquid Bird
Read on SubstackGoing to space with Projectiles! by Liquid Bird
Read on Substack