He estimated the Sun was at an average distance of 1,210 Earth radii, while the radius of the sphere of the fixed stars was 20,000 times the radius of the Earth.
Han skønnede, at Solen var en gennemsnitlig afstand på 1.210 gange Jordens radius, mens radius af kuglen for ​​de faste stjerner var 20.000 gange radius for Jorden.