Calculadora de Energia Orbital Específica — Formula

Specific Orbital Energy

epsilon = -G M / (2a)

  • Negative energy = bound (elliptical) orbit
  • Zero = parabolic escape
  • Positive = hyperbolic trajectory

    • This quantity is constant along the entire Keplerian orbit.

    Exemplo Resolvido

    ISS orbit with semi-major axis a = 6 771 km around Earth.

    1. epsilon = -G M / (2a)
    2. G M = 3.986e14
    3. 2a = 1.354e7
    4. epsilon = -3.986e14 / 1.354e7 ≈ -29.4 MJ/kg