One might investigate Russian satellite company with dodgy amounts (9)
I believe the answer is:
cosmonaut
'one might investigate russian satellite' is the definition.
'company with dodgy amounts' is the wordplay.
'company' becomes 'co' (abbreviation).
'with' is a charade indicator (letters next to each other).
'dodgy' indicates anagramming the letters.
'amounts' is an anagram of 'smonaut'.
'co'+'smonaut'='COSMONAUT'
(Other definitions for cosmonaut that I've seen before include "Long distance traveller" , "Russian space traveller" , "Spaceman" , "Yuri Gagarin, for example" .)