![]() 2014 EZ51 imaged by the Dark Energy Survey in March 2017 | |
Discovery [1] | |
---|---|
Discovered by | Pan-STARRS 1 |
Discovery site | Haleakala Obs. |
Discovery date | 18 April 2010 |
Designations | |
(523692) 2014 EZ51 | |
TNO [2] [3] · SDO [4] · distant [1] | |
Orbital characteristics [2] | |
Epoch 5 May 2025 (JD 2460800.5) | |
Uncertainty parameter 2 [2] ·2 [1] | |
Observation arc | 14.22 yr (5,193 d) |
Aphelion | 63.732 AU |
Perihelion | 39.972 AU |
51.852 AU | |
Eccentricity | 0.2291 |
373.4 yr (136,380 d) | |
270.38° | |
0° 0m 9.36s / day | |
Inclination | 10.288° |
27.634° | |
332.68° | |
Known satellites | 0 |
Physical characteristics | |
3.200±0.002 h [6] : 4 | |
0.13 (assumed) [3] | |
3.86 [1] [2] | |
(523692) 2014 EZ51 (provisional designation 2014 EZ51) is a large trans-Neptunian object in the scattered disc, approximately 700 kilometres (430 miles) in diameter. It was discovered on 18 April 2010, by the Pan-STARRS 1 survey at Haleakala Observatory, Hawaii, United States. [1]
2014 EZ51 has not yet been imaged by high-resolution telescopes, so it has no known moons. [7] The Hubble Space Telescope is planned to image 2014 EZ51 in 2026, which should determine if it has significantly sized moons. [7]
2014 EZ51 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 10° with respect to the ecliptic. [2] The body's observation arc begins with its official discovery observation at Haleakala in April 2010. [1]
This minor planet was numbered by the Minor Planet Center on 25 September 2018 ( M.P.C. 111779). [8] As of June 2025 [update] , it has not been named. [1]
According to Michael Brown and Johnston's Archive, 2014 EZ51 could measure somewhere around 620 kilometers in diameter, based on an absolute magnitude of 3.86 and an assumed albedo of 0.13. [3] On 25 February 2019, a stellar occultation by 2014 EZ51 was observed in New Zealand. From these observations, a lower limit of 575 km was placed on its mean diameter. [5]
In 2023, a study on photometric observations of trans-Neptunian objects by the Kepler space telescope found that 2014 EZ51 rotates with a period of 3.2 hours and exhibits a light curve amplitude of 0.145±0.026 magnitudes, which indicates its shape must be elongated. [6] : 4, 10