Location sent out about large group of stars (13)
I believe the answer is:
constellation
'group of stars' is the definition.
(I've seen this before)
'location sent out about large' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'about' indicates putting letters inside.
'large' becomes 'l'.
'location'+'sent'='locationsent'
'locationsent' with letters rearranged gives 'constelation'.
'constelation' placed around 'l' is 'CONSTELLATION'.
(Other definitions for constellation that I've seen before include "Twins, perhaps" , "Star group" , "E.g Orion, Andromeda" , "Formation of stars" , "Twenty-five across for instance" .)