Comet Hale–Bopp
came to perihelion in November 2014 at a distance of 7.9 AU from the Sun (inside of the orbit of Saturn). With an absolute magnitude (H) 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.