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 | 4.772AU |
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 | |
2 m[4] | |
31.33±0.35[6] | |
2022 EB5 was a small, two-metreApollonear-Earth asteroid that disintegrated in Earth's atmosphere at 21:22UTC on 11 March 2022, over theArctic Ocean southwest of theNorwegian islandJan Mayen. With an atmospheric entry speed of 18 km/s (11 mi/s), the asteroid's impact generated a 4-kiloton-equivalentfireball that was detected byinfrasound fromGreenland and Norway.[7][8] A bright flash possibly associated with the event was reported by observers fromNorthern Iceland.[8]
It was discovered by astronomerKrisztián Sárneczky atKonkoly Observatory'sPiszkéstető Station inMátra 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 theMinor Planet Center'sNear-Earth Object Confirmation Page under the temporary designationSar2593.[3]