2020 SL1
| Discovery | |
|---|---|
| Discovered by | Pan-STARRS 1 |
| Discovery site | Haleakala Obs. |
| Discovery date | 18 September 2020 |
| Designations | |
| 2020 SL1 | |
| P116Atg | |
| NEO · Apollo · PHA | |
| Orbital characteristics | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 12.04 yr (4,396 days) |
| Earliest precovery date | 25 October 2008 |
| Aphelion | 4.121 AU |
| Perihelion | 0.9091 AU |
| 2.515 AU | |
| Eccentricity | 0.63856 |
| 3.99 yr | |
| 34.497° | |
| 0° 14m 49.48s / day | |
| Inclination | 13.764° |
| 275.182° | |
| 12 January 2020 09:09 UT | |
| 331.910° | |
| Earth MOID | 0.04732 AU |
| TJupiter | 3.108 |
| Physical characteristics | |
| 0.9–2.0 km (assumed albedo 0.05–0.25) | |
| 23.6 (current) 22.3 (at discovery) | |
| 17.353±0.567 17.1 | |
2020 SL1 is a near-Earth asteroid of the Apollo group, discovered by the Pan-STARRS 1 survey at Haleakala Observatory, Hawaii on 18 September 2020. With an estimated diameter of 0.9–2.0 km (0.56–1.24 mi), it is the largest potentially hazardous asteroid discovered in 2020.