2013 BL76
Using an epoch of February 2017, it is the minor planet with the 5th largest heliocentric semi-major axis in the Solar System (larger ones include , , and ). has a barycentric semi-major axis of ~964 AU, which is the third largest barycentric semi-major axis of any minor planet. Possible comet. With an absolute magnitude (H) of 10.8 and an unknown albedo, the object has an estimated diameter of 15–40 km. Since it has not been seen out-gassing, it is not known if it is a comet or not. It might also be a damocloid, a type  of minor planet that was originally a comet but lost most of its near-surface volatile materials after numerous orbits around the Sun. It also might be a dormant comet that simply has not been seen outgassing. Orbit. came to perihelion 8.3 AU from the Sun on 27 October 2012, when it reached an apparent magnitude of about 20. In 1927, when it was 100 AU from the Sun, it had an apparent magnitude of about 30.8. For comparison dwarf planet 90377 Sedna had an apparent magnitude of 21.7 when it was 100 AU from the Sun. It comes to  opposition at the start of September. It will not be 50 AU from the Sun until 2045. After leaving the planetary region of the Solar System, will have a barycentric aphelion of 1920 AU with an orbital period of 29900 years. The orbit of currently comes closer to Saturn than any of the other giant planets. In a 10 million year integration of the orbit, the nominal (best-fit) orbit acquires a perihelion point of 0.5 AU (inside the orbit of Venus), and one of the 3-sigma clones acquires a perihelion point of only .