2019 EU5

Last updated

2019 EU5
Discovery [1]
Discovered by S. S. Sheppard
D. J. Tholen
C. Trujillo
Discovery site Mauna Kea Obs.
Discovery date5 March 2019
Designations
2019 EU5
TNO [2]  · ESDO (detached) [3]  · ETNO  · distant [4]
Orbital characteristics   (barycentric) [5]
Epoch 2025-May-05
(JD 2460800.5)
Uncertainty parameter 4 [2]
Observation arc 5.03 yr (1,837 days)
Earliest precovery date6 January 2016
Aphelion 2,395  AU
Perihelion 46.759 AU
1,221 AU
Eccentricity 0.9617
42,630 yr
359.331°
0° 0m 0.083s / day
Inclination 18.207°
109.227°
109.204°
Physical characteristics
160–220 km (est. 0.1–0.2) [6]
25.6 [1]
6.35±0.14 [2] [4]

    2019 EU5 is an extreme trans-Neptunian object from the scattered disc on a highly eccentric orbit in the outermost region of the Solar System. It was discovered on 5 March 2019, by American astronomers Scott Sheppard, David Tholen, and Chad Trujillo at Mauna Kea Observatories in Hawaii, and announced on 17 December 2021. [1] It was 83.4 astronomical units from the Sun when it was discovered, making it one of the most distant known Solar System objects from the Sun as of December 2021. [1] It has been identified in precovery images from 6 January 2016. [2]

    References

    1. 1 2 3 4 "MPEC 2021-Y19 : 2019 EU15". Minor Planet Electronic Circular. Minor Planet Center. Retrieved 17 December 2021.
    2. 1 2 3 4 "JPL Small-Body Database Browser: (2019 EU15)" (2021-01-16 last obs.). Jet Propulsion Laboratory . Retrieved 17 December 2021.
    3. ↑ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. International Astronomical Union. Retrieved 17 December 2021.
    4. 1 2 "2019 EU15". Minor Planet Center. International Astronomical Union. Retrieved 17 December 2021.
    5. ↑ "Horizons System". Jet Propulsion Laboratory. Retrieved 17 December 2021. (Solution using the Solar System barycenter. Ephemeris Type: Osculating Orbital Elements, Coordinate Center: 500@0, Epoch: 2025-May-05
    6. ↑ "Asteroid Size Estimator". Center for Near Earth Object Studies. Jet Propulsion Laboratory. Retrieved 17 December 2021.
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