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]
| 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 | |
| 2 m[4] | |
| 31.33±0.35[6] | |
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]
Sun · Earth · 2022 EB5
See also
editNotes
edit- ^ 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
edit- ^ a b c "2022 EB5". Minor Planet Center. Retrieved 11 March 2022.
- ^ a b "MPEC 2022-E178 : 2022 EB5". Minor Planet Electronic Circulars. Minor Planet Center. 11 March 2022. Retrieved 11 March 2022.
- ^ a b ""Pseudo-MPEC" for Sar2593". Project Pluto. 11 March 2022. Archived from the original on 12 March 2022. Retrieved 11 March 2022.
- ^ a b c "NASA System Predicts Impact of Small Asteroid". NASA. 15 March 2022. Retrieved 16 March 2022.
- ^ "NEO Basics". Center for NEO Studies. Jet Propulsion Laboratory. Retrieved 13 March 2022.
- ^ a b c "JPL Small-Body Database Browser: (2022 EB5)" (2022-03-11 last obs.). Jet Propulsion Laboratory. Retrieved 11 March 2022.
- ^ "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 21 March 2022. Retrieved 25 March 2022.
- ^ a b c d Antier, Karl (13 March 2022). "2022 EB5 : 5th predicted Earth impact!". International Meteor Organization. Retrieved 15 March 2022.
External links
edit- 2022 EB_5, Daniel W. E. Green, Central Bureau Electronic Telegram, Central Bureau for Astronomical Telegrams, 13 March 2022
- 2022 EB5 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2022 EB5 at ESA–space situational awareness
- 2022 EB5 at the JPL Small-Body Database
