2020 UA
From Wikipedia, the free encyclopedia
Near earth asteroid
| Discovery [1] [2] | |
|---|---|
| Discovered by | Mount Lemmon Survey |
| Discovery site | Mt. Lemmon Obs. |
| Discovery date | 16 October 2020 |
| Designations | |
| 2020 UA | |
| C3K1WP2 [3] [4] | |
| NEO · Aten [5] | |
| Orbital characteristics [5] | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 4 | |
| Observation arc | 4 days |
| Aphelion | 1.206 AU |
| Perihelion | 0.7537 AU |
| 0.980 AU | |
| Eccentricity | 0.23093 |
| 0.97 yr | |
| 133.866° | |
| 1° 0m 57.005s / day | |
| Inclination | 2.762° |
| 27.909° | |
| 20 January 2020 05:17 UT [5] | |
| 27.909° | |
| Earth MOID | 0.000204 AU (30,500 km) |
| Physical characteristics | |
| 5–12 m (assumed albedo 0.05–0.25)[6] | |
| 20.8 (at discovery)[1] | |
| 28.39±0.38[5] 28.43[2] | |
2020 UA is a tiny near-Earth asteroid around 5–12 metres (16–39 ft) across that passed within 46,100 km (28,600 mi) of Earth on 21 October 2020 at 02:00 UT.[5]
References
[edit ]- ^ a b "MPEC 2020-U52 : 2020 UA". Minor Planet Electronic Circular. Minor Planet Center. 17 October 2020. Retrieved 19 January 2021.
- ^ a b "2020 UA". Minor Planet Center. International Astronomical Union. Retrieved 19 January 2021.
- ^ "2020 UA". NEO Exchange. Las Cumbres Observatory. 19 October 2020. Retrieved 19 January 2021.
- ^ Gray, Bill (17 October 2020). ""Pseudo-MPEC" for C3K1WP2". Project Pluto. Retrieved 19 January 2021.
- ^ a b c d e "JPL Small-Body Database Browser: 2020 UA" (2020年10月20日 last obs.). Jet Propulsion Laboratory . Retrieved 19 January 2021.
- ^ Bruton, Dan. "Conversion of Absolute Magnitude to Diameter for Minor Planets". Department of Physics, Engineering, and Astronomy. Stephen F. Austin State University. Archived from the original on 23 July 2011. Retrieved 19 January 2021.
External links
[edit ]- Near-Earth Asteroid 2020 UA extremely close encounter: online observations – 20 Oct. 2020
- 2020 UA at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2020 UA at ESA–space situational awareness
- 2020 UA at the JPL Small-Body Database
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