The orbit of 2017 OF201 is a tale of gravitational dynamics. Its perihelion at 44.9 AU puts it close to Pluto’s territory, but its aphelion pushes it out into the zone where the Sun’s force ...

2017 OF201’s elongated orbit makes it an outlier from the clustered objects, but Yang’s calculations suggest that the orbit of 2017 OF201 should remain stable over roughly the next billion years.

The team has named the celestial body 2017 OF201. The dwarf planet is described as one of the most distant visible objects in the solar system and is said to be large enough to rival the size of ...