Discovery [1] [2] | |
---|---|
Discovered by | Krisztián Sárneczky |
Discovery site | Piszkéstető Stn. |
Discovery date | 11 March 2022 |
Designations | |
2022 EB5 | |
Sar2593 [3] | |
NEO [a] · Apollo [6] [1] | |
Orbital characteristics [6] | |
Epoch 11 March 2022 ( JD 2459649.5) | |
Uncertainty parameter 6 | |
Observation arc | 1.9 hours [1] |
Aphelion | 4.772 AU |
Perihelion | 0.888 AU |
2.830 AU | |
Eccentricity | 0.6863 |
4.76 yr (1,738 days) | |
353.614 ° | |
0° 12m 25.472s / day | |
Inclination | 10.422° |
350.992° | |
July 2017 (last perihelion) | |
222.416° | |
Earth MOID | 3717 km |
Jupiter MOID | 0.661 AU |
Physical characteristics | |
Mean diameter | 2 m [4] |
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 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]
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]