Simplify the following text for a Grade 10 native English-speaking person.
Original: is about 4 kilometres in diameter , and orbits Jupiter at an average distance of 23,974 Mm in 758.341 days , at an inclination of 166 Â to the ecliptic ( 167 Â to Jupiter 's equator ) , in a retrograde direction and with an eccentricity of 0.307 .
Simplified: is about 4 kilometres in diameter , and orbits Jupiter at an average distance of 23,974,000 km in 758.341 days , at an inclination of 166 Â to the ecliptic ( 167 Â to Jupiter 's equator ) , with an eccentricity of 0.307 .