In April 2016, NASA New Horizons spacecraft observed 1994 JR1, a 90-mile 145-kilometer wide Kuiper Belt object KBO orbiting more than 3 billion miles 5 billion kilometers from the sun.

New Horizons Collects First Science on a Post-Pluto Object

In April 2016, NASA New Horizons spacecraft observed 1994 JR1, a 90-mile 145-kilometer wide Kuiper Belt object KBO orbiting more than 3 billion miles 5 billion kilometers from the sun.