Since the early 1990s, observations of the solar system beyond Neptune, where Pluto resides, have revealed numerous objects orbiting the Sun. This collection of objects is known as the Kuiper belt. More Kuiper belt objects are being discovered each year, providing astronomers with a better understanding of their physical and orbital properties. From the list below, identify which properties are characteristic of Kuiper belt objects.
-about 25% of Kuiper belt objects have the same orbital period as Pluto
-Kuiper belt objects have a low relative brightness when observed from Earth
-Kuiper belt objects orbit the Sun at great distances
-Kuiper belt objects are small, icy bodies