Set orals about a star (5)

I believe the answer is:

solar

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'about a star' is the definition.
I can't tell whether this definition defines the answer.

'set orals' is the wordplay.
'set' is an anagram indicator (instruction to set the letters).
'orals' is an anagram of 'SOLAR'.

Can you help me to learn more?

(Other definitions for solar that I've seen before include "Particular star's" , "of heavenly body" , "Coming from the sun" , "Using the sun's energy" , "Powered by the sun" .)

I've seen this clue in The Mirror.

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