Simplify the following text for a Grade 10 native English-speaking person.
Original: S\/2004 S 7 is about 6 kilometres in diameter , and orbits Saturn at an average distance of 20,999 Mm in 1140.24 days , at an inclination of 166 Â to the ecliptic ( 166 Â to Saturn 's equator ) , in a retrograde direction and with an eccentricity of 0.5299 .
Simplified: S\/2004 S 7 is about 6 kilometres in diameter , and orbits Saturn at an average distance of 20,577,000 km in 1101.989 days , at an inclination of 166 Â to the ecliptic ( 166 Â to Saturn 's equator ) , with an eccentricity of 0.554 .