(225416) 1999 YC is an asteroid belonging to the Apollo group of near-Earth objects, whose orbit brings it close to Earth. It has a highly eccentric orbit, with an orbital eccentricity of 0.831, and an absolute magnitude of 17.0.
Like most asteroids, it is believed to have formed from the primordial solar nebula as fragments of planetesimalsâÂÂmaterial in the early Solar System that was not massive enough to become a planet.