Hyperion is a moon of Saturn . It was discovered on September 16 , 1848 by William Cranch Bond , George Phillips Bond and William Lassell . Hyperion ( , or as in Greek á 1\/2 Ï Î Ï Î Ï Î 1\/2 ) , also known as Saturn VII , is a moon of Saturn discovered by William Cranch Bond , George Phillips Bond and William Lassell in 1848 .