Kore is about 2 kilometers in diameter , and orbits Jupiter at an average distance of 23,239,000 km in 723.720 days , at an inclination of 141 Â to the ecliptic ( 139 Â to Jupiter 's equator ) , with an eccentricity of 0.2462 . Kore is about 2 kilometers in diameter , and orbits Jupiter at an average distance of 23,239 Mm in 723.720 days , at an inclination of 141 Â to the ecliptic ( 139 Â to Jupiter 's equator ) , in a retrograde direction and with an eccentricity of 0.2462 .