 2014 EZ51 imaged by theDark 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 | 14.22yr (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° | |
| Knownsatellites | 0 |
| Physical characteristics | |
| 3.200±0.002 h[6]: 4 | |
| 0.13(assumed)[3] | |
| 3.86[1][2] | |
(523692) 2014 EZ51 (provisional designation2014 EZ51) is a largetrans-Neptunian object in thescattered disc, approximately 700 kilometres (430 miles) in diameter. It was discovered on 18 April 2010, by thePan-STARRS 1 survey atHaleakala Observatory, Hawaii, United States.[1]
2014 EZ51 has not yet been imaged by high-resolution telescopes, so it has no known moons.[7] TheHubble Space Telescope is planned to image2014 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 aneccentricity of 0.23 and aninclination of10° with respect to theecliptic.[2] The body'sobservation arc begins with its official discovery observation at Haleakala in April 2010.[1]
Thisminor planet wasnumbered by theMinor Planet Center on 25 September 2018 (M.P.C. 111779).[8] As of June 2025[update], it has not beennamed.[1]
According to Michael Brown andJohnston's Archive,2014 EZ51 could measure somewhere around 620 kilometers in diameter, based on anabsolute magnitude of 3.86 and an assumedalbedo of 0.13.[3] On 25 February 2019, astellar occultation by2014 EZ51 was observed in New Zealand. From these observations, a lower limit of 575 km was placed on itsmean diameter.[5]
In 2023, a study onphotometric observations of trans-Neptunian objects by theKepler space telescope found that2014 EZ51 rotates with a period of 3.2 hours and exhibits alight curve amplitude of0.145±0.026magnitudes, which indicates its shape must be elongated.[6]: 4, 10
| Consensus | _(cropped).jpg)  | ||||||||||||
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| Candidate (for TNOs, D+1σ ≥ 700 km or H ≤ 4.0) |
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2014 in space | ||
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