Fenrir is about 4 kilometres in diameter , and orbits Saturn at an average distance of 22,611,000 km in 1269.362 days , at an inclination of 163 Â to the ecliptic ( 143 Â to Saturn 's equator ) , with an eccentricity of 0.131 . Fenrir is about 4 kilometres in diameter , and orbits Saturn at an average distance of 22,454 Mm in 1260 days , at an inclination of 163 Â to the ecliptic ( 143 Â to Saturn 's equator ) with an eccentricity of 0.136 .