Posted by sam on Sunday, December 23, 2012 at 2:33pm.
At opposition, Saturn is observed to subtend an angular radius of 9.16 arcseconds (not including the rings). Use this and the conversion factors in our Table of Constants to find the radius of Saturn in km, rounded to three significant digits.

Astronomy  Anonymous, Sunday, December 22, 2013 at 11:07am
29*10^3