List of the brightest Kuiper belt objects
Since the year 2000, a number of Kuiper belt objects (KBOs) with diameters of between 500 and 1500 km (more than half that of Pluto) have been discovered. 50000 Quaoar, a classical KBO discovered in 2002, is over 1000 km across.
Source: Wikipedia — List of the brightest Kuiper belt objects (CC BY-SA 4.0)