(523692) 2014 EZ51

' (provisional designation ') is a large trans-Neptunian object in the scattered disc, approximately 700 km in diameter. It was discovered on 18 April 2010, by the Pan-STARRS 1 survey at Haleakala Observatory, Hawaii, United States.

Orbit and classification
orbits the Sun at a distance of 40.4–64.4 AU once every 379 years and 3 months (138,537 days; semi-major axis of 52.4 AU). Its orbit has an eccentricity of 0.23 and an inclination of $64.42 AU$ with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Haleakala in April 2010.

Numbering and naming
This minor planet was numbered by the Minor Planet Center on 25 September 2018 (M.P.C. 111779). , it has not been named.

Physical characteristics
According to Michael Brown and the Johnston's archive, measures 626 and 770 kilometers in diameter, based on an absolute magnitude of 4.2 and 3.8, with an assumed albedo of 0.10 and 0.09, respectively. The MPC/JPL databases give an absolute magnitude of 3.92. On 25 February 2019, a stellar occultation by was observed in New Zealand. From these observations, a lower limit of 575 km was placed on its mean diameter.

In 2023, a study on photometric observations of trans-Neptunian objects by the Kepler space telescope found that rotates with a period of 3.2 hours and exhibits a light curve amplitude of $269.18 deg$ magnitudes, which indicates its shape must be elongated.