(523692) 2014 EZ51

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(523692) 2014 EZ51
2014 EZ51 DECam 2017-03-13.png
2014 EZ51 imaged by the Dark Energy Survey in March 2017
Discovery [1]
Discovered by Pan-STARRS 1
Discovery site Haleakala Obs.
Discovery date18 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
  • >575  km (occultation) [5]
  • 619 km(calculated from assumed albedo) [3]
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]

    Contents

    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]

    Orbit and classification

    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]

    Numbering and naming

    This minor planet was numbered by the Minor Planet Center on 25 September 2018 ( M.P.C. 111779). [8] As of June 2025, it has not been named. [1]

    Physical characteristics

    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 

    References

    1. 1 2 3 4 5 6 7 "523692 (2014 EZ51)". Minor Planet Center. Retrieved 10 July 2021.
    2. 1 2 3 4 5 "JPL Small-Body Database Browser: 523692 (2014 EZ51)" (2020-06-14 last obs.). Jet Propulsion Laboratory . Retrieved 10 July 2021.
    3. 1 2 3 4 "List of Known Trans-Neptunian Objects". Johnston's Archive. 22 July 2017. Retrieved 9 October 2018.
    4. ↑ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 9 October 2018.
    5. 1 2 Loader, B.; Hanna, W. (25 February 2019). "(523692) 2014 EZ51, 2019 February 25 occultation". occultations.org.nz. Retrieved 5 January 2020.
    6. 1 2 Kecskeméthy, Viktória; Kiss, Csaba; Szakáts, Róbert; Pál, András; Szabó, Gyula M.; Molnár, László; et al. (January 2023). "Light Curves of Trans-Neptunian Objects from the K2 Mission of the Kepler Space Telescope". The Astrophysical Journal Supplement Series. 264 (1): 20. arXiv: 2210.06571 . Bibcode:2023ApJS..264...18K. doi: 10.3847/1538-4365/ac9c67 . S2CID   119343798. 18.
    7. 1 2 Proudfoot, Benjamin (August 2025). "A Search For The Moons of Mid-Sized TNOs". Mikulski Archive for Space Telescopes. Space Telescope Science Institute: HST Proposal 18010. Cycle 33. Retrieved 17 August 2025.
    8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 9 October 2018.
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