Scientists discover the most distant body ever seen in our Solar System
The solar system has a new distance champ.
Astronomers just found an object that lies 140 astronomical units (AU) from the sun. That’s 140 times the Earth-sun distance, which is about 150 million kilometres. In case you want some more perspective: Pluto orbits the sun at an average distance of about 39.5 AU.
“This is hot off the presses,” Scott Sheppard, of the Carnegie Institution for Science in Washington, D.C., said during a public lecture last Thursday (Feb. 21) at his home institution.
Sheppard and his team don’t know much about FarFarOut. They just spotted it, after all, and haven’t gathered enough data to work out its orbit or calculate a size estimate. They plan to keep observing FarFarOut to collect such information, but doing so may be tough.
“It’s very faint,” Sheppard said. “It’s on the edge of our ability to detect it.”
The newfound body’s nickname is a nod to Farout, the previous distance record holder, whose discovery Sheppard and his colleagues announced in December. Farout, officially known as 2018 VG18, currently lies about 120 AU from the sun. The object is thought to be a dwarf planet that takes about 1,000 years to complete one lap around our star.
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