Table 4-2: Average Distances of the Planets from the Sun
PlanetCopernican value (AU*)Modern value (AU)
Mercury0.38  0.39
Venus0.72  0.72
Earth1.00  1.00
Mars1.52  1.52
Jupiter5.22  5.20
Saturn9.07  9.55
Uranus—19.19
Neptune—30.07
*1 AU = 1 astronomical unit = average distance from Earth to the Sun.