[Observation] Average greatest elongations of 23 (Mercury)and 46 degrees (Venus) [Modeling mechanism] Size of epicycles set by these angles, proportional to distances. [Object(s)] 
Interior planets
S t a r s
S u n
M o o n
T h e 5 p l a n e t s
P l a n e t s
I n t e r i o r p l a n e t s
E x t e r i o r p l a n e t s