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2022 EB5 was a small, metre-sized Apollo near-Earth asteroid that impacted Earth's atmosphere at 21:22 UTC on 11 March 2022, over the Arctic Ocean southwest of the Norwegian 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]

2022 EB5
Discovery[1][2]
Discovered byK. Sárneczky
Discovery sitePiszkéstető Stn.
Discovery date11 March 2022
Designations
MPC designation
2022 EB5
Alternative designations
Sar2593[3]
Minor planet category
NEO[lower-alpha 1] · Apollo[6][1]
Orbital characteristics[6]
Epoch 11 March 2022 (JD 2459649.5)
Uncertainty parameter 6
Observation arc1.9 hours[1]
Aphelion4.772 AU
Perihelion0.888 AU
Semi-major axis
2.830 AU
Eccentricity0.6863
Orbital period (sidereal)
4.76 yr (1,738 days)
Mean anomaly
353.614°
Mean motion
0° 12m 25.472s / day
Inclination10.422°
Longitude of ascending node
350.992°
Time of perihelion
July 2017
(last perihelion)
Argument of perihelion
222.416°
Earth MOID3717 km
Jupiter MOID0.661 AU
Physical characteristics
Mean diameter
2 m[4]
Absolute magnitude (H)
31.40±0.25[6]

    It was discovered by astronomer Krisztián Sárneczky at Konkoly Observatory's Piszkéstető Station in Budapest, Hungary about two hours before impact.[2][8] 2022 EB5 is one of only 5 asteroids to be discovered before Earth impact (along with 2014 AA, 2018 LA, 2008 TC3, and 2019 MO.)[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.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}  Sun ·   Earth ·   2022 EB5
    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. "2022 EB5". Minor Planet Center. Retrieved 11 March 2022.
    2. "MPEC 2022-E178 : 2022 EB5". Minor Planet Electronic Circulars. Minor Planet Center. 11 March 2022. Retrieved 11 March 2022.
    3. ""Pseudo-MPEC" for Sar2593". Project Pluto. 11 March 2022. Archived from the original on 12 March 2022. Retrieved 11 March 2022.
    4. "NASA System Predicts Impact of Small Asteroid". NASA. 15 March 2022. Retrieved 16 March 2022.
    5. "NEO Basics". Center for NEO Studies. Jet Propulsion Laboratory. Retrieved 13 March 2022.
    6. "JPL Small-Body Database Browser: (2022 EB5)" (2022-03-11 last obs.). Jet Propulsion Laboratory. Retrieved 11 March 2022.
    7. "Firesballs Reported by US Government Sensors". Center for Near Earth Object Studies Fireball and Bolide Data. NASA Jet Propulsion Laboratory. Archived from the original on 28 March 2022. Retrieved 25 March 2022.
    8. Antier, Karl (13 March 2022). "2022 EB5 : 5th predicted Earth impact!". International Meteor Organization. Retrieved 15 March 2022.




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