For diagrams with Earth as the center, see: http://www.dynamicdiagrams.com/work/orrery/ http://www.dynamicdiagrams.com/work/orrery/ Launch the Flash simulation

For diagrams with Earth as the center, see: http://www.dynamicdiagrams.com/work/orrery/ http://www.dynamicdiagrams.com/work/orrery/ Launch the Flash simulation, click on Tychonian, and trace a planet. Venus is unexpected.