[4] 2011 UN63 follows a low eccentricity orbit (0.064) with a semi-major axis of 1.52 AU.

Its orbit is relatively well determined as it is currently (March 2013) based on 64 observations with a data-arc span of 793 days.

[1] This asteroid has an absolute magnitude of 19.7 which gives a characteristic diameter of 560 m.[1] Recent calculations[2][3] indicate that it is a stable L5 Mars trojan asteroid with a libration period of 1350 yr and an amplitude of 14°.

These values as well as its short-term orbital evolution are similar to those of 5261 Eureka or 2011 SC191.

As in the case of Eureka, calculations in both directions of time (4.5 Gyr into the past and 4.5 Gyr into the future) indicate that 2011 UN63 may be a primordial object, perhaps a survivor of the planetesimal population that formed in the terrestrial planets region early in the history of the Solar System.