Simplify the following text for a Grade 8 native English-speaking person.
Original: Sinope ( , or as in Greek Î # Î Î 1\/2 Ï Ï Î ) is a retrograde irregular satellite of Jupiter discovered by Seth Barnes Nicholson at Lick Observatory in 1914 , and is named after Sinope of Greek mythology .
Simplified: Sinope is a non-spherical moon of Jupiter . It was found by Seth Barnes Nicholson at Lick Observatory in 1914 , and is named after Sinope of Greek mythology .