Assertion: planet's discovery | /r/HasProperty | object
Facets:
Source sentences:
text: While the Celestial Police failed in their mission to discover the new planet, they were successful in other ways: Just a year after Oblers and von Zach helped to confirm the discovery of Ceres, Olbers made another discovery on March 28th, 1802: an object similar to that of Ceres in roughly the same orbital area.