Pluto has long been the most distant large object in our solar system, but compared with more recent discoveries, Pluto is far from it. Now, astronomers have identified the most distant world at present - it's aptly named farfarfarout.The object, tentatively named ag37 in 2018 when it was discovered, is 132 astronomical units (AU), or nearly 20 billion kilometers (12.4 billion miles) from the sun. As a reference, the distance from the earth to the sun is 1 AU, even Pluto can only reach about 49 Au.
However, despite its name farfarfarout, it is not always the farthest, because these distant solar system objects usually travel in extremely elliptical orbits. Farfarout can reach 175 Au at the farthest distance, which is slightly inadequate compared with goblin's incredible 2300 Au maximum distance. At its closest, farfarfarout is only 27 Au away - closer to the sun than Neptune.
As early as January 2018, astronomers used the Subaru Telescope to discover farfarfarout for the first time, but the exact distance cannot be determined. Due to the distance, the object is very dim and moves very slowly in the sky. Further observation is needed to track its path and calculate its size.
In doing so, astronomers estimated its width to be about 400 kilometers (250 miles), much smaller than any officially recognized dwarf planet. Further studies will be carried out to help define its orbit and other features more clearly.
In the end, it will be given a more serious name than farfarfarout.