Direction of the asteroids (4)

I believe the answer is:

east

'direction' is the definition.
(east is a kind of direction)

'of the asteroids' is the wordplay.
'of' indicates the answer is hidden within the clue.
'EAST' can be found hidden inside 'the asteroids'.

(Other definitions for east that I've seen before include "One of four at table" , "Compass bearing" , "Opposite of west" , "Tom's friend" , "Bearing of ninety degrees" .)

I've seen this clue in the Evening Standard.

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