54598 Bienor (/bɨ.ˈiːnɔr/ bi-YEE-nor; from Greek: Βιάνωρ Bianor) is a centaur that grazes the orbit of Uranus. It is named after the mythological Centaur Bienor. Its closest approach to the Sun (perihelion) is 13.2 AU. As of 2012 Bienor is currently 16.9 AU from the Sun and will reach perihelion in 2027.Mike Brown’s website lists it as a possible dwarf planet with a measured diameter of 206 km.
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