Astronomy:2022 EB5

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Short description: 2022 asteroid-type meteoroid


2022 EB5
Discovery[1][2]
Discovered byKrisztián Sárneczky
Discovery sitePiszkéstető Stn.
Discovery date11 March 2022
Designations
2022 EB5
Sar2593[3]
Minor planet categoryNEO[lower-alpha 1] · Apollo[6][1]
Orbital characteristics[6]
Epoch 11 March 2022 (JD 2459649.5)
Uncertainty parameter 6
Observation arc1.9 hours[1]
|{{{apsis}}}|helion}}4.772 AU
|{{{apsis}}}|helion}}0.888 AU
2.830 AU
Eccentricity0.6863
Orbital period4.76 yr (1,738 days)
Mean anomaly353.614°
Mean motion0° 12m 25.472s / day
Inclination10.422°
Longitude of ascending node350.992°
|{{{apsis}}}|helion}}July 2017
(last perihelion)
222.416°
Earth MOID3717 km
Jupiter MOID0.661 AU
Physical characteristics
Mean diameter2 m[4]
Absolute magnitude (H)31.33±0.35[6]


2022 EB5 was a small, two-metre Apollo near-Earth asteroid that disintegrated in Earth's atmosphere at 21:22 UTC on 11 March 2022, over the Arctic Ocean southwest of the Norway island Jan Mayen. With an atmospheric entry speed of 18 km/s (11 mi/s), the asteroid's impact generated a 4-kiloton-equivalent fireball that was detected by infrasound from Greenland and Norway.[7][8] A bright flash possibly associated with the event was reported by observers from Northern Iceland.[8]

It was discovered by astronomer Krisztián Sárneczky at Konkoly Observatory's Piszkéstető Station in Mátra Mountains, Hungary about two hours before impact.[2][8] 2022 EB5 is the fifth asteroid discovered before impacting Earth.[8][4] It was briefly listed on the Minor Planet Center's Near-Earth Object Confirmation Page under the temporary designation Sar2593.[3]

Animation of 2022 EB5 around Sun
  Sun ·   Earth ·   2022 EB5

See also

Notes

  1. ↑ 2022 EB5 is not considered a potentially hazardous object (PHO) due to its small size.[4] A PHO is defined by having an Earth minimum orbit intersection distance (MOID) of 0.05 AU or less, and having an absolute magnitude of 22 or brighter.[5]

References

  1. ↑ 1.0 1.1 1.2 "2022 EB5". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2022+EB5. Retrieved 11 March 2022. 
  2. ↑ 2.0 2.1 "MPEC 2022-E178 : 2022 EB5". Minor Planet Center. 11 March 2022. https://minorplanetcenter.net/mpec/K22/K22EH8.html. Retrieved 11 March 2022. 
  3. ↑ 3.0 3.1 ""Pseudo-MPEC" for Sar2593". Project Pluto. 11 March 2022. https://www.projectpluto.com/neocp2/mpecs/Sar2593.htm. Retrieved 11 March 2022. 
  4. ↑ 4.0 4.1 4.2 "NASA System Predicts Impact of Small Asteroid". NASA. 15 March 2022. https://www.nasa.gov/feature/jpl/nasa-system-predicts-impact-of-small-asteroid. Retrieved 16 March 2022. 
  5. ↑ "NEO Basics". Jet Propulsion Laboratory. https://cneos.jpl.nasa.gov/about/neo_groups.html. Retrieved 13 March 2022. 
  6. ↑ 6.0 6.1 6.2 "JPL Small-Body Database Browser: (2022 EB5)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54254967. Retrieved 11 March 2022. 
  7. ↑ "Firesballs Reported by US Government Sensors". NASA Jet Propulsion Laboratory. https://cneos.jpl.nasa.gov/fireballs/. 
  8. ↑ 8.0 8.1 8.2 8.3 Antier, Karl (13 March 2022). "2022 EB5 : 5th predicted Earth impact!". International Meteor Organization. https://www.imo.net/2022-eb5-5th-predicted-earth-impactor-asteroid-on-march-11/. Retrieved 15 March 2022. 

External links



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