Kepler’s laws of planetary motion

13 February 2014

Ellipse

Table of conics, Cyclopaedia, 1728

Kepler’s second law

Kepler’s third law

Orbit parametersPlanet Period,

Earth yearsSemi-major axis, AU

Eccentricity

Mercury 0.241 0.387 0.206

Venus 0.723 0.007

Earth 1.00 1.00 0.017

Mars 1.88 1.524 0.093

Jupiter 5.203 0.048

Saturn 9.54 0.056

Uranus 84.01 19.18 0.04

Neptune 164.79 30.07 0.008

Pluto 247.68 0.25

Eris 560.23 0.44

Orbit parametersPlanet Period,

Earth yearsSemi-major axis, AU

Eccentricity

Mercury 0.241 0.387 0.206

Venus 0.615 0.723 0.007

Earth 1.00 1.00 0.017

Mars 1.88 1.524 0.093

Jupiter 11.86 5.203 0.048

Saturn 29.46 9.54 0.056

Uranus 84.01 19.18 0.04

Neptune 164.79 30.07 0.008

Pluto 247.68 39.43 0.25

Eris 560.23 67.958 0.44

Eris and Pluto story