(472651) 2015 DB216

(472651) 2015 DB₂₁₆
Discovery
Discovered by	Mount Lemmon Survey (G96)
Discovery date	February 27, 2015
Designations
MPC designation	2015 DB216
Minor planet category	Uranus co-orbital centaur · distant
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 2
Observation arc	13.17 yr (4,812 days)
Aphelion	25.478 AU
Perihelion	12.944 AU
Semi-major axis	19.211 AU
Eccentricity	0.3262
Orbital period (sidereal)	84.20 yr (30,755 days)
Mean anomaly	314.27°
Mean motion	0° 0m 42.12s / day
Inclination	37.709°
Longitude of ascending node	6.2797°
Argument of perihelion	237.99°
Jupiter MOID	8.37627 AU (1.253072 Tm)
Physical characteristics
Dimensions	44–160 km[1]
Apparent magnitude	20.8 (2015); 20.7 (2016); 19.4 (2029; peak)
Absolute magnitude (H)	8.4

(472651) 2015 DB₂₁₆ is a centaur and Uranus co-orbital discovered on February 27, 2015, by the Mount Lemmon Survey. It is the second known centaur on a horseshoe orbit with Uranus, and the third Uranus co-orbital discovered after 2011 QF99 (a Trojan) and 83982 Crantor (a horseshoe librator). A second Uranian Trojan, 2014 YX49, was announced in 2017.^[3]

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