(472651) 2015 DB216 is a centaur and Uranus co-orbital discovered on February 27, 2015, by the Mount Lemmon Survey.
[3] An early orbital calculation of the asteroid with an observation arc of 10 days suggested an extremely close MOID to Neptune, but further observations on March 27 refined the orbit to show that the asteroid passes no less than several astronomical units away from Neptune, and show the orbit instead being that of a typical centaur, with a perihelion near that of Saturn, and traveling near to Uranus and Neptune.
However it is not a Trojan, as it stays near the opposite side of the Sun from Uranus.
A paper, submitted on July 27, 2015, analyzed 2015 DB216's orbital evolution, and suggested that it may be more stable than the other known Uranus co-orbitals due to its high inclination, and that many more undiscovered Uranus co-orbitals may exist.
[4] Precovery images from 2003 were located soon after 2015 DB216's discovery, giving it an 11-year observation arc.