Assertion: asteroid belt's asteroid | /r/HasAspect | a diameter of 240 km
Facets:
Source sentences:
text: While most asteroids may be only the size of pebbles, 16 asteroids have a diameter of 240 km (150 miles) and Ceres, the largest, has a diameter of about about 914 km (568 miles).
text: Over 200 asteroids are known to be larger than 100 km (60 miles), with sixteen asteroids known to have diameters of 240 kilometers (150 miles) or greater.