Star's key broadcast (6)

I believe the answer is:

altair

'star's' is the definition.
(Altair is a star in the constellation of Aquila)

'key broadcast' is the wordplay.
'key' becomes 'alt' (the Alt keyboard button).
'broadcast' becomes 'air' (to air on TV).
'alt'+'air'='ALTAIR'

(Other definitions for altair that I've seen before include "A trial (anag) - star" , "Lariat (anag) - star in Aquila" , "Bright star; lariat (anag.)" , "Heavenly body" , "Member of Eagle family" .)

I've seen this clue in The Telegraph.

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