Simplify the following text for a Grade 10 native English-speaking person.
Original: Named in August 2003 after the giant Siarnaq ( 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 .