CREATE TABLE table_21078 ("Name" TEXT, "Latitude" TEXT, "Longitude" TEXT, "Diameter  ( km ) " TEXT, "Year named" FLOAT, "Name origin" TEXT)

What is the name origin with a diameter of 220.0 kilometers?
SELECT "Name origin" FROM table_21078 WHERE "Diameter (km)" = '220.0'
SELECT "Name origin" FROM "table_21078" WHERE "Diameter (km)" = '220.0'