Planetary Orbits
Somehow I had never heard of the Pentagram of Venus before reading about it in an excellent Azimuth post by John Baez:
http://johncarlosbaez.wordpress.com/2014/01/04/the-pentagram-of-venus/
Of course I wanted to make it in GeoGebra, and of course I wanted to generalize it. The view checkboxes let you switch your reference frame, the settings let you quickly compare Venus-Earth and Earth-Mars, or switch to aany possibility in the Settings. Necessary planetary info can be found at:
http://www.telescope.org/nuffield/pas/solar/solar7.html
More GeoGebra at mathhombre.blogspot.com.
THE PLANETS
Planet Distance Mass Time for 1
from of Planet Orbit
Sun (x10 ^22 kg) of Sun
(million km) (days)
Mercury 58 33.0 88.0
Venus 108 487 224.7
Earth 150 598 365.2
Mars 228 64.2 687.0
Jupiter 778 190,000 4332
Saturn 1,429 56,900 10760
Uranus 2,871 8,690 30700
Neptune 4,504 10,280 60200
Pluto 5,913 1.49 90600