[Observation] General motion W to E through zodiac [Modeling mechanism] Motion of deferents W to E; period set by observation of planet going around the ecliptic. [Object(s)] 
The 5 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