Heavenly body modelled to make money, we hear (6)
I believe the answer is:
saturn
'heavenly body' is the definition.
(Saturn is an example)
'modelled to make money we hear' is the wordplay.
'modelled' becomes 'sat' ('sit' can be a synonym of 'model').
'to make money' becomes 'earn' (I've seen this before).
'we hear' indicates a 'sounds like' (homophone) clue.
'earn' is a homophone of 'urn'.
'sat'+'urn'='SATURN'
(Other definitions for saturn that I've seen before include "Solar system planet" , "Roman god - gas giant" , "The dark planet" , "Giant planet" , "Turn as a planet" .)