Astronomy:2019 EU5
From HandWiki
| Discovery[1] | |
|---|---|
| Discovered by | S. S. Sheppard D. J. Tholen C. Trujillo |
| Discovery site | Mauna Kea Obs. |
| Discovery date | 5 March 2019 |
| Designations | |
| 2019 EU5 | |
| Minor planet category | TNO[2] · ESDO (detached)[3] · ETNO · distant[4] |
| Orbital characteristics[5] | |
| Epoch 21 January 2022 (JD 2459600.5) | |
| Uncertainty parameter 4[2] | |
| Observation arc | 5.03 yr (1,837 days) |
| Earliest precovery date | 6 January 2016 |
| |{{{apsis}}}|helion}} | 2,395 astronomical unit|AU |
| |{{{apsis}}}|helion}} | 46.759 AU |
| 1,221 AU | |
| Eccentricity | 0.9617 |
| Orbital period | 42,630 yr |
| Mean anomaly | 359.331° |
| Mean motion | 0° 0m 0.083s / day |
| Inclination | 18.207° |
| Longitude of ascending node | 109.227° |
| 109.204° | |
| Physical characteristics | |
| Mean diameter | 160–220 km (est. 0.1–0.2)[6] |
| Apparent magnitude | 25.6[1] |
| Absolute magnitude (H) | 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
- ↑ 1.0 1.1 1.2 1.3 "MPEC 2021-Y19 : 2019 EU15". Minor Planet Electronic Circular. Minor Planet Center. https://minorplanetcenter.net/mpec/K21/K21Y19.html. Retrieved 17 December 2021.
- ↑ 2.0 2.1 2.2 2.3 "JPL Small-Body Database Browser: (2019 EU15)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54231364. Retrieved 17 December 2021.
- ↑ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. International Astronomical Union. https://www.minorplanetcenter.net/iau/lists/t_centaurs.html. Retrieved 17 December 2021.
- ↑ 4.0 4.1 "2019 EU15". Minor Planet Center. International Astronomical Union. https://www.minorplanetcenter.net/db_search/show_object?object_id=2019+EU5. Retrieved 17 December 2021.
- ↑ "Horizons System". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/horizons/app.html#/. 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. https://cneos.jpl.nasa.gov/tools/ast_size_est.html. Retrieved 17 December 2021.
External links
- 2019 EU5 at AstDyS-2, Asteroids—Dynamic Site
- 2019 EU5 at the JPL Small-Body Database
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