Assertion: asteroid belt's body | /r/HasProperty | designated belt comets
Facets:
value: by henry hsieh
type: OTHER
value: originally
type: OTHER
value: in 2006
type: TEMPORAL
value: by astronomers david jewitt
type: OTHER
Source sentences:
text: These bodies were originally designated main-belt comets (MBCs) in 2006 by astronomers David Jewitt and Henry Hsieh, but this name implies they are necessarily icy in composition like a comet and that they only exist within the main-belt, whereas the growing population of active asteroids shows that this is not always the case.