CREATE TABLE table_21095 ("Name" TEXT, "Latitude" TEXT, "Longitude" TEXT, "Diameter  ( km ) " TEXT, "Year named" FLOAT, "Name origin" TEXT)

What year was Norterma Tholus created?
SELECT MAX("Year named") FROM table_21095 WHERE "Name" = 'Norterma Tholus'
SELECT MAX("Year named") FROM "table_21095" WHERE "Name" = 'Norterma Tholus'