2022 QX4

Near-Earth asteroid 2022

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 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. ^ a b c "2022 QX4 Orbit". Minor Planet Center. Retrieved 11 September 2022.
  2. ^ a b c d "Archive of ESA Risk List". European Space Agency near-earth objects coordination centre. Archived from the original on 4 September 2022.
  3. ^ a b c "JPL Small-Body Database Browser: (2022 QX4)". Jet Propulsion Laboratory. Archived from the original on 31 August 2022. Retrieved 11 September 2022.
  4. ^ "MPEC 2022-R148 : 2022 QX4". IAU Minor Planet Center. 11 September 2022. Retrieved 11 September 2022. (K22Q04X)
  5. ^ "2022 QX4 geocentric distance from 08-26 to 09-06 (2068)". JPL Horizons. Archived from the original on 11 September 2022.

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
    • Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
  • 2022 QX4 at ESA–space situational awareness
    • Ephemerides · Observations · Orbit · Physical properties · Summary
  • 2022 QX4 at the JPL Small-Body Database
    • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
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