Original: Named in August 2003 after the giant SiarnaqIAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (naming the moon) (also known as Sedna) in Inuit mythology, it is the largest member of the Inuit group of irregular satellites.
Simplified: It was named in August 2003 after the giant Siarnaq (also known as Sedna) in Inuit mythology, it is the biggest member of the Inuit group of non-spherical moons.