Comet NEOWISE, formally designated as C/2014 N3, is a distant non-periodic comet that came to perihelion at a distance of 3.88 AU (580 million km) from the Sun on 13 March 2015. It is one of several comets discovered by the NEOWISE space telescope.
References
External links C/2014 N3 at the JPL Small-Body Database