Asteroid
Although their location in the asteroid belt excludes them from planet status, the three largest objects, Ceres, Vesta, and Pallas, are intact protoplanets that share many characteristics common to planets, and are atypical compared to the majority of "potato"-shaped asteroids. The fourth largest asteroid, Hygiea, has an undifferentiated interior, like the majority of asteroids. Between them, the four largest asteroids constitute half the mass of the asteroid belt.
2018 GE3
In observational history, and other than possibly 2002 MN and , this asteroid is the largest known object to ever pass that close to Earth, as well as the Moon "(also see History of closest approaches of large near-Earth objects)". 99942 Apophis will break both of these records when it approaches only from Earth on 13 April 2029.