2019 EU5
Appearance
Discovery[1] | |
---|---|
Discovered by | S. S. Sheppard D. J. Tholen C. Trujillo |
Discovery site | Mauna Kea Obs. |
Discovery date | 5 March 2021 |
Designations | |
2019 EU5 | |
TNO[2] · ESDO (detached)[3] · ETNO · distant[4] | |
Orbital characteristics[5] | |
Epoch 21 January 2022 (JD 2459600.5) | |
Uncertainty parameter 5[2] · 9[4] | |
Observation arc | 1.87 yr (683 days) |
Aphelion | 2,714±1,412 AU |
Perihelion | 46.430±0.612 AU |
1,380±720 AU | |
Eccentricity | 0.9662±0.0233 |
51,252±37,574 yr | |
359.444° | |
0° 0m 0.069s / day | |
Inclination | 18.205° |
109.223° | |
109.242° | |
Physical characteristics | |
220–160 km (est. 0.1–0.2)[6] | |
6.364±0.136[2] · 6.4[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[update].[1] It has only been observed for up to 2 years, so its orbit is poorly constrained.[2]
References
- ^ a b c "MPEC 2021-Y19 : 2019 EU15". Minor Planet Electronic Circular. Minor Planet Center. Retrieved 17 December 2021.
- ^ a b c d "JPL Small-Body Database Browser: (2019 EU15)" (2021-01-16 last obs.). Jet Propulsion Laboratory. Retrieved 17 December 2021.
- ^ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. International Astronomical Union. Retrieved 17 December 2021.
- ^ a b c "2019 EU15". Minor Planet Center. International Astronomical Union. Retrieved 17 December 2021.
- ^ "Horizons System". Jet Propulsion Laboratory. Retrieved 17 December 2021. (Solution using the Solar System barycenter. Ephemeris Type: Osculating Orbital Elements, Coordinate Center: 500@0, Time Specification: JD 2459600.5)
- ^ "Asteroid Size Estimator". Center for Near Earth Object Studies. Jet Propulsion Laboratory. Retrieved 17 December 2021.
External links
- 2019 EU5 at AstDyS-2, Asteroids—Dynamic Site
- 2019 EU5 at the JPL Small-Body Database