Surtur is about 6 kilometres in diameter , and orbits Saturn at an average distance of 22,243,600 km in 1238.575 days , at an inclination of 166.9 Â to the ecliptic ( 148.9 Â to Saturn 's equator ) , with an eccentricity of 0.3680 . Surtur is about 6 kilometres in diameter , and orbits Saturn at an average distance of 22,243.6 Mm in 1238.575 days , at an inclination of 166.9 Â to the ecliptic ( 148.9 Â to Saturn 's equator ) , in a retrograde direction and with an eccentricity of 0.3680 .