(468861) 2013 LU28

, provisional designation is a highly eccentric trans-Neptunian object, retrograde centaur and damocloid from the outer regions of the Solar System. It was discovered on 8 June 2013 by astronomers with the Mount Lemmon Survey at the Mount Lemmon Observatory in Arizona, United States. The object is unlikely a dwarf planet as it measures approximately 110 km in diameter. It was numbered in 2016 and has not been named since.

Orbit and classification
orbits the Sun at a distance of 8.7–353.1 AU once every 2434 years (888,879 days; semi-major axis of 180.92 AU). Its orbit has an exceptionally high eccentricity of 0.95 and an inclination of 125° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Mount Lemmon in June 2013.

TNO, centaur and damocloid
With a semi-major axis larger than that of Neptune, is generically classified as a trans-Neptunian object. It is also considered an (extended) centaur, due to its eccentric orbit with a low perihelion of 8.7 AU and a higher-than-90°-inclination, which gives it a retrograde orbit. There are only about a hundred known retrograde minor planets out of nearly 800,000 observed bodies, and, together with and, it is among the largest such objects. also meets the orbital definition for being a damocloid, a cometary-like object without a coma or tail and a Tisserand's parameter with respect to Jupiter of less than 2 besides a retrograde orbit.

Numbering and naming
This distant minor planet was numbered by the Minor Planet Center on 20 June 2016 (M.P.C. 100585). As of 2018, it has not been named.

Diameter and albedo
According to the Johnston's archive and astronomer Michael Brown, measures 106 and 114 kilometers in diameter, based on an absolute magnitude of 8.1 and an assumed albedo for the body's surface of 0.08 and 0.09, respectively. According to Brown, is "probably not" a dwarf planet. As of 2018, no physical characteristics have been determined from photometric observations. The body's rotation period, pole and shape remain unknown.

Observations
On 12 April 2024, the ‘’James Webb Space Telescope’’ (JWST) observed 2013 LU28 for a duration of 2 hours, 57 minutes, and 32 seconds. The telescope’s Mid-Infrared Instrument (MIRI) in Medium Resolution Spectroscopy mode was used, tracking the asteroid using the Prime Targeted Moving mode. Published results are expected at a later date.