Astronomy:2020 OY4
From HandWiki
Short description: Near-Earth asteroid
| Discovery [1][2] | |
|---|---|
| Discovered by | MLS |
| Discovery site | Mount Lemmon Obs. |
| Discovery date | July 26, 2020 |
| Designations | |
| 2020 OY4 | |
| Minor planet category | NEO · Apollo [1][2] |
| Orbital characteristics [2] | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 6[2] · 7[1] | |
| Observation arc | 2 days |
| |{{{apsis}}}|helion}} | 1.5623 AU |
| |{{{apsis}}}|helion}} | 0.6873 AU |
| 1.1248 AU | |
| Eccentricity | 0.3889 |
| Orbital period | 1.19 yr (436 d) |
| Mean anomaly | 257.94° |
| Mean motion | 0° 49m 34.32s / day |
| Inclination | 2.1148° |
| Longitude of ascending node | 305.50° |
| 98.703° | |
| Earth MOID | 0.0000879 AU (0.034 LD) |
| Physical characteristics | |
| Mean diameter | 2–5 m[3] |
| Absolute magnitude (H) | 30.18[2] 30.35[1] |
2020 OY4 is a very small asteroid classified as a near-Earth object that passed within 21,850 miles (35,160 km) of the surface of Earth on July 28, 2020, with a fly-by speed of 12.4 kilometres (7.7 mi) per second.[3] The car-sized asteroid posed no risk of impact to Earth, but it did pass within the orbit of satellites in the geostationary ring at 35,785 kilometres (22,236 mi) above Earth's equator.[4]
The asteroid was discovered July 26, 2020 using the Mount Lemmon Survey telescope in the Santa Catalina Mountains northeast of Tucson, Arizona.[3] The next encounter closer than the Moon is predicted to occur July 30, 2055 at a distance of 200,000 kilometres (124,000 mi) or more.[2]
References
- ↑ 1.0 1.1 1.2 1.3 "2020 OY4". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2020+OY4. Retrieved 9 September 2020.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 "JPL Small-Body Database Browser: (2020 OY4)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=54049794. Retrieved 9 September 2020.
- ↑ 3.0 3.1 3.2 "CAFS for 2020 OY4". ESA's NEO Coordination Centre. http://neo.ssa.esa.int/c/document_library/get_file?uuid=3bbc9d97-f8b9-4224-bddd-db0f220230a7&groupId=10157.
- ↑ Malik, Tariq (July 28, 2020). "An asteroid the size of a car just zipped by Earth in close flyby". https://www.space.com/car-size-asteroid-2020-oy4-earth-flyby.html.
External links
- 2020 OY4 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2020 OY4 at ESA–space situational awareness
- 2020 OY4 at the JPL Small-Body Database
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