As one seen circling a star is condemned as idolater (10)
I believe the answer is:
asteroidal
'as one seen circling a star' is the definition.
I can't tell whether this defines the answer.
'condemned as idolater' is the wordplay.
'condemned' is an anagram indicator.
'as'+'idolater'='asidolater'
'asidolater' anagrammed gives 'ASTEROIDAL'.
'is' is the link.
Can you help me to learn more?
(Other definitions for asteroidal that I've seen before include "relating to Eros, etc" , "Like a heavenly body" , "like Ceres" .)