Hyrrokkin is about 8 kilometres in diameter , and orbits Saturn at an average distance of 18,168,300 km in 914.292 days , at an inclination of 153.3 Â to the ecliptic ( 154.3 Â to Saturn 's equator ) , with an eccentricity of 0.3604 . Hyrrokkin is about 8 kilometres in diameter , and orbits Saturn at an average distance of 18,168.3 Mm in 914.292 days , at an inclination of 153.3 Â to the ecliptic ( 154.3 Â to Saturn 's equator ) , in a retrograde direction and with an eccentricity of 0.3604 .