Hunter constellation or one on the celestial equator (5)
I believe the answer is:
orion
'hunter constellation' is the definition.
(I've seen this before)
'or one on the celestial equator' is the wordplay.
I cannot really understand how this works, but
'or' is present in the answer.
'one' could be 'i' (Roman numeral) and 'i' is present in the answer.
'on' is within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for orion that I've seen before include "Large constellation" , "A giant hunter in Greek legend, and a constellation" , "Mythical great hunter" , "Bright constellation, named after legendary Greek hunter" , "Mythical Greek hunter turned into constellation" .)