Assertion: asteroid belt's object | /r/HasProperty | 5 astraea
Facets:
Source sentences:
text: However, in 1845 astronomers detected a fifth object (5 Astraea) and, shortly thereafter, new objects were found at an accelerating rate.
text: The burning of Lilienthal in the Napoleonic wars brought this first period of discovery to a close, and only in 1845 did astronomers detect another object (5 Astraea).