Really far out

2019-03-08 05:02:12

A ball of ice 100 kilometres across is the most widely travelled member of the Solar System. The object, 1999 CF119, was spotted by astronomers at the University of Hawaii. Its path has now been calculated by Brian Marsden of the Harvard-Smithsonian Center for Astrophysics in Massachusetts, who says it takes 1200 years to complete an orbit that takes it 30 billion kilometres from the Sun. The only objects with more distant orbits are the long period comets,