Kepler's Laws

Front

Planets orbit the Sun in a shape called a(n)

Back

ellipse

Front

Ellipse surrounds two points:

Back

foci

Front

A planet's elliptical orbit has one focus at:

Back

the Sun

Front

Closest point of a planet's orbit to the Sun

Back

perihelion

Front

Farthest point of a planet from the Sun:

Back

aphelion

Front

Planet's speed: A to B, B to C, H to I, I to J

Back

A to B

Front

Area between points A, B and the Sun vs. area between points H, I and the Sun.

Back

Both areas are equal in size.

Front

Eccentricity of 0

Back

Circle

Front

Eccentricity of zero

Back

Circle

Front

Smallest terrestrial planet?

Back

Mercury