Original: It was named in April 2007IAUC 8826 : Satellites of Jupiter and Saturn April 5 , 2007 ( naming the moon ) after Sköll , a giant wolf from Norse mythology , son of Fenrisulfr and twin brother of Hati .
Simplified: It was named in April 2007 after Sköll , a giant wolf from Norse mythology , son of Fenrisulfr and twin brother of Hati .