2013 AZ60
is a small Solar System body from the scattered disk or inner Oort cloud. has the 8th-largest semi-major axis of a minor planet not detected outgassing like a comet.
came to perihelion in November 2014 at a distance of 7.9 AU from the Sun. With an absolute magnitude of 10.2, has an estimated diameter of 40 km. Comet Hale–Bopp, which is roughly the same size, was not discovered until it was 7.2 AU from the Sun and had started outgassing CO. may be discovered to be cometary as it comes to perihelion. It comes to opposition at the start of April.
After leaving the planetary region of the Solar System, will have a barycentric aphelion of 827 AU with an orbital period of 8500 years. In a 10 million year integration of the orbit, one of the 3-sigma clones is ejected from the Solar System.
Physical characteristics and orbit
A 2016 study found to have a comet-like albedo of 2.9% and a color typical of D-type asteroids. It is unknown if it is a so-called "super comet" or an extinct comet, considering its large distance from the Sun. It was also determined that has a diameter of kilometers, larger than initially believed. A light curve analysis found it to have a rotation period of hours, typical of asteroids its size. No significant satellites were detected.It was also found that is on an extremely unstable orbit, with a ~64% chance of being ejected from the Solar System in 1 million years, and a ~25% chance of being ejected in the next 500,000 years, as well as a 4.2% chance of its orbit venturing into the neighborhood of Earth.