CREATE TABLE table_48665 ("Name" TEXT, "Latitude" TEXT, "Longitude" TEXT, "Diameter  ( km ) " FLOAT, "Year named" FLOAT)

What is the Year named of the Ganga Valles?
SELECT MAX("Year named") FROM table_48665 WHERE "Name" = 'ganga valles'
SELECT MAX("Year named") FROM "table_48665" WHERE "Name" = 'ganga valles'