2010 BK118
is a centaur roughly 20–60 km in diameter. It is on a retrograde cometary orbit. It has a barycentric semi-major axis of ~450 AU.
came to perihelion in April 2012 at a distance of 6.1 AU from the Sun. It has a Jupiter-MOID of 1.2 AU., it is 27 AU from the Sun.
It will not be 50 AU from the Sun until 2043. After leaving the planetary region of the Solar System, will have a barycentric aphelion of 894 AU with an orbital period of ~8000 years.