S\/2007 S 2 is about 6 kilometres in diameter , and orbits Saturn at an average distance of 16,560,000 kilometres in 792.96 days , at an inclination of 176.68 Â to the ecliptic and with an eccentricity of 0.218 . S\/2007 S 2 is about 6 kilometres in diameter , and orbits Saturn at an average distance of 16,560,000 kilometres in 792.96 days , at an inclination of 176.68 Â to the ecliptic , in a retrograde direction and with an eccentricity of 0.218 .