Sir for getting aerospace branch how much rank i have secure

@ abhishek 
aerospace is the most demandable branch of iit as far as the top iit are concerned . 
so, here i am giving the closing rank for getting the aerospace branch in the top iits . 
IIT BOMBAY – 1664 ( CLOSING RANK ) 
IIT MADRAS – 2903 RANK 
IIT KANPUR – 2919 RANK 
IIT KHARAGPUR – 3120 RANK 
hope it clears your doubt 

all the best ..