Astronomy:2022 QX4
| Discovery[1] | |
|---|---|
| Discovered by | ATLAS (W68) |
| Discovery date | 24 August 2022 |
| Designations | |
| 2022 QX4 | |
| Minor planet category | |
| Orbital characteristics[3] | |
| Epoch 2022-Aug-09 (JD 2459800.5) | |
| Uncertainty parameter 2 | |
| Observation arc | 9 years |
| Earliest precovery date | 16 August 2013 |
| |{{{apsis}}}|helion}} | 1.025 astronomical unit|AU (Q) |
| |{{{apsis}}}|helion}} | 0.33713 AU (q) |
| 0.6809 AU (a) | |
| Eccentricity | 0.50481 (e) |
| Orbital period | 0.562 years |
| Mean anomaly | 154.3° (M) |
| Inclination | 0.14800° (i) |
| Longitude of ascending node | 335.6° (Ω) |
| |{{{apsis}}}|helion}} | 13 May 2022 |
| 176.2° (ω) | |
| Earth MOID | 0.00027 AU (40 thousand km; 0.11 LD) |
| Jupiter MOID | 3.97 AU (594 million km) |
| Physical characteristics | |
| Dimensions |
|
| Absolute magnitude (H) | 24.7[1] |
2022 QX4 is a Tunguska event-sized asteroid, classified as a near-Earth object of the Aten group, approximately 40 meters (130 feet) in diameter.[2] It was discovered by ATLAS on 24 August 2022,[1] when it was 0.03 astronomical unit|AU (4.5 million km) from Earth. On 4 September 2022 with an observation arc of 8 days, it was listed with a 1-in-109 chance of impacting Earth with a Torino scale of 1 for a virtual impactor on 4 September 2068 00:52 UTC.[2] Five precovery images from August 2013 were published on 11 September 2022[4] extending the observation arc to 9 years and 2022 QX4 was removed from the Sentry Risk Table. The nominal approach is expected to occur 26 August 2068.[5]
Closest approach to Earth in 2022 occurred on 29 August 2022 at a distance of about 1.8 million km.[3] The asteroid passed about 130,000 km (0.34 LD) from Earth on 5 September 1977.[3]
References
- ↑ 1.0 1.1 1.2 "2022 QX4 Orbit". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2022+QX4.
- ↑ 2.0 2.1 2.2 2.3 "Archive of ESA Risk List". European Space Agency near-earth objects coordination centre. https://neo.ssa.esa.int/risk-list.
- ↑ 3.0 3.1 3.2 "JPL Small-Body Database Browser: (2022 QX4)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2022+QX4&view=OPC.
- ↑ "MPEC 2022-R148 : 2022 QX4". IAU Minor Planet Center. 2022-09-11. https://www.minorplanetcenter.net/mpec/K22/K22RE8.html. (K22Q04X)
- ↑ "2022 QX4 geocentric distance from 08-26 to 09-06 (2068)". JPL Horizons. https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272022+QX4%27&START_TIME=%272068-08-26%27&STOP_TIME=%272068-09-06%27&STEP_SIZE=%272+hour%27&QUANTITIES=%2720%27.
External links
- Archive of Sentry Risk Table entry for 2022 QX4 with a 8-day observation arc and a cumulative 0.69% of an Earth impact
- (Expired) risk corridor for 2022 QX4
- Found archival observations of 2022 QX4 from 2013 (MPML 3 September 2022)
- 2022 QX4 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2022 QX4 at ESA–space situational awareness
- 2022 QX4 at the JPL Small-Body Database
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