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_77198 ( "Name" text, "Latitude" text, "Longitude" text, "Diameter (km)" real, "Year named" real )

### Question ###
What is Year Named, when Longitude is 227.5E?

### Accurate SQL ###

SELECT "Year named" FROM table_77198 WHERE "Longitude" = '227.5e'