# What is keplers third law

## What is Kepler’s third law simplified?

Kepler’s third law of planetary motion says that the average distance of a planet from the Sun cubed is directly proportional to the orbital period squared. Newton found that his gravity force law could explain Kepler’s laws. … Kepler found this law worked for the planets because they all orbit the same star (the Sun).

## What does Kepler’s third law state?

Kepler’s Third Law: the squares of the orbital periods of the planets are directly proportional to the cubes of the semi major axes of their orbits. Kepler’s Third Law implies that the period for a planet to orbit the Sun increases rapidly with the radius of its orbit.

## What are Kepler’s 3 Laws Why are they important?

Explanation: Kepler’s laws describe how planets (and asteroids and comets) orbit the sun. They can also be used to describe how moons orbit around a planet. But, they do not just apply to our solar system — they can be used to describe the orbits of any exoplanet around any star.

## What is meant by Kepler’s law?

any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas ); or the square of the period of revolution of each planet is proportional to the cube of the semimajor …

## What is Newton’s version of Kepler’s third law?

Newton developed a more general form of what was called Kepler’s Third Law that could apply to any two objects orbiting a common center of mass. This is called Newton’s Version of Kepler’s Third Law: M1 + M2 = A3 / P2. Special units must be used to make this equation work.

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## What is Kepler’s 2nd law called?

Kepler’s Second Law, or The Law of Equal Areas in Equal Time — The line between a planet and the sun sweeps out equal areas in the plane of the planet’s orbit over equal times. … It is often called the Law of Harmony because it shows a harmonic relation between distances and periods.

## What does P 2 a 3 mean?

There is a simplified version of this law: P2 = a3 where: The object must be orbiting the Sun. P = period of the orbit in years. a = average distance of the object from the Sun in AU.