2022 EB5
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. A bright flash possibly associated with the event was reported by observers from Northern Iceland.
| Discovery | |
|---|---|
| Discovered by | Krisztián Sárneczky |
| Discovery site | Piszkéstető Stn. |
| Discovery date | 11 March 2022 |
| Designations | |
MPC designation | 2022 EB5 |
Alternative designations | Sar2593 |
Minor planet category | NEO · Apollo |
| Orbital characteristics | |
| Epoch 11 March 2022 (JD 2459649.5) | |
| Uncertainty parameter 6 | |
| Observation arc | 1.9 hours |
| Aphelion | 4.772 AU |
| Perihelion | 0.888 AU |
Semi-major axis | 2.830 AU |
| Eccentricity | 0.6863 |
Orbital period (sidereal) | 4.76 yr (1,738 days) |
Mean anomaly | 353.614° |
Mean motion | 0° 12m 25.472s / day |
| Inclination | 10.422° |
Longitude of ascending node | 350.992° |
| July 2017 (last perihelion) | |
| 222.416° | |
| Earth MOID | 3717 km |
| Jupiter MOID | 0.661 AU |
| Physical characteristics | |
Mean diameter | 2 m |
| 31.33±0.35 | |
It was discovered by astronomer Krisztián Sárneczky at Konkoly Observatory's Piszkéstető Station in Mátra Mountains, Hungary about two hours before impact. 2022 EB5 is the fifth asteroid discovered before impacting Earth. It was briefly listed on the Minor Planet Center's Near-Earth Object Confirmation Page under the temporary designation Sar2593.