Satellite's giving learner a run around (5)

I believe the answer is:

lunar

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'satellite's' is the definition.
Although both the answer and definition are adjectives, I cannot understand how they can define each other.

'learner a run around' is the wordplay.
'learner' becomes 'l' (as in a learner driver with L-plates on their car).
'around' is an anagram indicator.
'a'+'run'='arun'
'arun' with letters rearranged gives 'unar'.
'l'+'unar'='LUNAR'

'giving' is the link.

Can you help me to learn more?

(Other definitions for lunar that I've seen before include "One sort of month" , "Selenic" , "Period of 28 days" , "Pertaining to the moon" , "Relating to the moon" .)

I've seen this clue in the Evening Standard.

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