A god in orbit (5)

I believe the answer is:

pluto

I'm a little stuck... Click here to teach me more about this clue!

'a god' is the definition.
(Pluto is an example)

I can't explain the rest of the clue.

(Other definitions for pluto that I've seen before include "Most remote planet" , "Minor planet" , "that is submerged under water" , "animated dog" , "Disney dog - planet" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app