CREATE TABLE table_72818 ("Name" TEXT, "Latitude" TEXT, "Longitude" TEXT, "Diameter  ( km ) " TEXT, "Year named" FLOAT, "Name origin" TEXT)

what is the diameter (km) of the feature of latitude 23.0s
SELECT "Diameter (km)" FROM table_72818 WHERE "Latitude" = '23.0S'
SELECT "Diameter (km)" FROM "table_72818" WHERE "Latitude" = '23.0S'