Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_41146 ( "Date" text, "Rocket" text, "Type" text, "Launch site" text, "Satellite" text )

### Question ###
What is the launch site of the delta iv rocket with an unknown date and a gps iif-10 satellite?

### Accurate SQL ###

SELECT "Launch site" FROM table_41146 WHERE "Date" = 'unknown' AND "Rocket" = 'delta iv' AND "Satellite" = 'gps iif-10'