New outermost body found in solar system
DOI: 10.1063/PT.5.029364
New Scientist : Yesterday at a meeting of the American Astronomical Society’s division for planetary sciences, Scott Sheppard of the Carnegie Institution of Washington and a team of researchers announced they had identified a rocky world three times as far away from the Sun as Pluto. The movement of the object allowed Sheppard’s team to calculate that the object was about 103 AU from the Sun. Given its brightness at that distance, the object would be between 500 km and 1000 km in diameter, less than half the size of Pluto. A separate group of researchers found a collection of smaller objects between 80 AU and 90 AU from the Sun that might be the same class of objects as Sedna and 2012 VP113, neither of which come within 50 AU of the Sun.
