Simplify the following text for a Grade 10 native English-speaking person.
Original: is about 1 kilometre in diameter , and orbits Jupiter at an average distance of 23,858 Mm in 752.839 days , at an inclination of 165 Â to the ecliptic ( 165 Â to Jupiter 's equator ) , in a retrograde direction and with an eccentricity of 0.276 .
Simplified: is about 1 kilometre in diameter , and orbits Jupiter at an average distance of 23,858,000 km in 752.839 days , at an inclination of 165 Â to the ecliptic ( 165 Â to Jupiter 's equator ) , with an eccentricity of 0.276 .