Assertion: asteroid | /r/HasProperty | based on spectral shape
Facets:
Source sentences:
text: In 1973, astronomers Clark R. Chapman, David Morrison, and Ben Zellner developed a simple taxonomic system for asteroids based on color, albedo, and spectral shape.
text: In 1973, astronomers Clark R. Chapman, David Morrison, and Ben Zellner developed a simple taxonomic system for asteroids based on color, albedo, and spectral shape.