Welcome to The Goblin
. A brand newly discovered dwarf planet right out there in the deep cold beyond Neptune in the Kuiper Belt; its only friend at the moment is the demoted Pluto who is in a deep sulk because of the unfairness of it all.
Aaaanyway, The Goblin is strengthening the astronomers' suspicion that riiiiight out there is a giant planet we haven't found yet but no doubt numerous telescopes are now trained out there hoping to Be The First
TG takes around 40,000 years to orbit the sun, which is why these things are quite difficult to find however big they are.