Way out past Neptune lies the Kuiper Belt. The most famous and one of the largest Kuiper Belt objects is Pluto, but there are many other interesting objects that hang out around the Kuiper Belt. Another object out in the Kuiper Belt is called Quaoar which is about half the size of Pluto. New Horizons recently took distant pictures of Quaoar as it flies towards its next target MU69 in the distant Solar System. At the time it was discovered in 2002, Quaoar was the next largest object in the Kuiper Belt after Pluto, but was soon surpassed by Eris and others.
While Quaoar is a typical Kuiper Belt object, there are other objects that are not part of the Kuiper Belt, but are also much closer than the Oort Cloud should be. One of these objects is Sedna.
Sedna is about ¾ the size of Pluto and takes 10,500 years to orbit the Sun. It is located beyond the Kuiper Belt, but is much closer than the Oort Cloud was theorized to be. Sedna is interesting because it is located in no-man’s land on an extremely elliptical orbit. It also is interesting because it seems to have a moon, but no moon is visible from Satellite images. Sedna orbits very far from the inner planets, but also extremely far from the Oort Cloud, so there is not a real explanation for how it ended up in this elliptical orbit. It was probably nudged by distant stars and other objects over and over again until it ended up in its current elliptical orbit. In 2014, another object, VP113, was discovered near Sedna, on a similar orbital path. These types of objects are thought to be part of a different group of objects that is beyond the Kuiper Belt, but still far away from the Oort Cloud.