Select Kepler's Law
ORBITAL MECHANICS SCAN 🪐
Randomized: 5 Questions from our Keplerian Bank.
1. LAW OF ELLIPSES
Planets move in elliptical orbits with the Sun at one of the two foci. This explains why a planet's distance from the Sun changes throughout its year.
ELLIPSE MATH2. LAW OF AREAS
A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. Planets move faster when closer to the Sun (perihelion).
ORBITAL SPEEDPhysics: Angular Momentum
3. HARMONIC LAW
The square of a planet's orbital period (T) is proportional to the cube of the semi-major axis (a) of its orbit: **T2 a3**.
PERIOD CALCULATOR