Assertion: asteroid belt's asteroid | /r/CapableOf | show extreme changes
Facets:
value: in brightness
type: OTHER
Source sentences:
text: In 1969, University of Arizona astronomers at the Lunar and Planetary Lab ("LPL"), Larry Dunlap and Tom Gehrels, noticed that as the asteroid 624 Hektor, far beyond the main asteroid belt in the region of Jupiter showed extreme changes in brightness as it rotated.