2020 UA
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.
| Discovery | |
|---|---|
| Discovered by | Mount Lemmon Survey |
| Discovery site | Mt. Lemmon Obs. |
| Discovery date | 16 October 2020 |
| Designations | |
MPC designation | 2020 UA |
Alternative designations | C3K1WP2 |
Minor planet category | NEO · Aten |
| Orbital characteristics | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 4 | |
| Observation arc | 4 days |
| Aphelion | 1.206 AU |
| Perihelion | 0.7537 AU |
Semi-major axis | 0.980 AU |
| Eccentricity | 0.23093 |
Orbital period (sidereal) | 0.97 yr |
Mean anomaly | 133.866° |
Mean motion | 1° 0m 57.005s / day |
| Inclination | 2.762° |
Longitude of ascending node | 27.909° |
| 20 January 2020 05:17 UT | |
| 27.909° | |
| Earth MOID | 0.000204 AU (30,500 km) |
| Physical characteristics | |
Mean diameter | 5–12 m (assumed albedo 0.05–0.25) |
| 20.8 (at discovery) | |
| 28.39±0.38 28.43 | |
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