Assertion: meteoroid's size | /r/HasProperty | known to better than 1%
Facets:
value: from images of the asteroid surface
type: OTHER
value: from radar observations
type: OTHER
value: from stellar occultations
type: LOCATION
Source sentences:
text: While the size of a small fraction of these asteroids is known to better than 1%, from radar observations, from images of the asteroid surface, or from stellar occultations, the diameter of the vast majority of near Earth asteroids has only been estimated on the basis of their brightness and a representative asteroid surface reflectivity or albedo, which is commonly assumed to be 14%.
text: While the size of a small fraction of these asteroids is known to better than 1%, from radar observations, from images of the asteroid surface, or from stellar occultations, the diameter of the vast majority of near Earth asteroids has only been estimated on the basis of their brightness and a representative asteroid surface reflectivity or albedo, which is commonly assumed to be 14%.