Kostenloser Orbital Eccentricity Rechner
Berechnen Sie orbital eccentricity aus periapsis und apoapsis distances. Kostenloser orbit shape Rechner.
km
km
Eccentricity
0.016711
Große Halbachse149,600,000 km
Eccentricity vs Periapsis Distance
Formel
Orbital Eccentricity
Eccentricity describes how elongated an orbit is (0 = circle, approaching 1 = very elongated ellipse).
Formula
e = (r_a - r_p) / (r_a + r_p)
Semi-major axis: a = (r_a + r_p) / 2
Lösungsbeispiel
Earth: perihelion 147.1M km, aphelion 152.1M km.
- 01e = (152.1M - 147.1M) / (152.1M + 147.1M)
- 02e = 5M / 299.2M ≈ 0.01672
- 03a = 299.2M / 2 = 149.6M km
Häufig Gestellte Fragen
What eccentricity is a circle?
A perfect circle has e = 0. Most planets have e < 0.1.
What does e = 1 mean?
Eccentricity of 1 is a parabolic escape trajectory. Above 1 is hyperbolic.
Which planet is most eccentric?
Mercury at about 0.2056 among the eight planets.