2023 CX1
| Discovery[1][2] | |
|---|---|
| Discovered by | Krisztián Sárneczky |
| Discovery site | Piszkéstető Stn. |
| Discovery date | 12 February 2023 |
| Designations | |
| 2023 CX1 | |
| Sar2667 | |
| NEO · Apollo | |
| Orbital characteristics[3] | |
| Epoch 13 February 2023 (JD 2459988.5) | |
| Uncertainty parameter 5 | |
| Observation arc | 6.48 hours (0.27 d)[1] |
| Aphelion | 2.453 AU |
| Perihelion | 0.918 AU |
| 1.686 AU | |
| Eccentricity | 0.4552 |
| 2.19 yr (799.2 days) | |
| 346.265° | |
| 0° 27m 1.487s / day | |
| Inclination | 3.565° |
| 323.833° | |
| 28 February 2022[4] | |
| 219.037° | |
| Earth MOID | 0.000111 AU (16,600 km; 0.043 LD) |
| Physical characteristics | |
| ≈ 1 m[5][6] | |
| 32.604±0.564[3] 32.64[1] | |
2023 CX1, previously known as Sar2667, was a metre-sized asteroid or meteoroid that entered Earth's atmosphere on 13 February 2023 03:00 UTC and disintegrated as a meteor over the English Channel near Normandy, France.[5] It was discovered seven hours before impact by Hungarian astronomer Krisztián Sárneczky, at Konkoly Observatory's Piszkéstető Station in Mátra Mountains, Hungary.[2] Before it impacted, 2023 CX1 was originally a near-Earth asteroid on an Earth-crossing Apollo-type orbit.[1]
Discovery
Krisztián Sárneczky first imaged 2023 CX1 on 12 February 2023 at 20:18 UTC, when it was less than 233,000 km (145,000 mi; 0.61 LD) from Earth and inside the orbit of the Moon.[2][7] At discovery, the asteroid moved quickly in the northern hemisphere sky at an angular rate of 14 arcseconds per minute, with an accelerating radial velocity of 9 km/s (5.6 mi/s) towards Earth and an initial apparent magnitude of 19.4.[7] Recognizing it as a near-Earth object candidate, Sárneczky gave it the temporary designation Sar2667 and reported the discovery to the Minor Planet Center's Near-Earth Object Confirmation Page (NEOCP), calling for further follow-up by other observatories around the world.[2] The Višnjan Observatory at Tičan, Croatia observed the asteroid starting at 21:03 UTC and confirmed it was headed for impact with Earth.[2][6]
The meteoroid was last observed on 13 February 2023 02:46:55 UTC by the Rantiga Osservatorio at Tincana, Italy, just 13 minutes before impact and three minutes before it entered Earth's shadow and became invisible at 02:50 UTC.[2][7] 2023 CX1 was approximately 14,500 km (9,000 mi) from Earth's center (8,100 km or 5,000 mi altitude) at that time.[8]
By the time 2023 CX1 was published, at least 20 observatories have observed and have submitted astrometry of the meteoroid before impact to the Minor Planet Center.[2]
Impact
2023 CX1 entered the atmosphere at 03:00 UTC and traveled eastward over the coast of Normandy, France along the English Channel, falling at a 40–50° inclination relative to vertical.[6] As it experienced atmospheric drag during its high-speed entry, it burned as a bright meteor that was seen by witnesses from Northern France, Great Britain, Belgium and the Netherlands.[9]
2023 CX1 is the seventh asteroid discovered before impacting Earth.[5] It is also Sárneczky's second discovery of an impacting asteroid, after 2022 EB5 which he discovered a year prior in March 2022.
See also
- Asteroid impact prediction
- Impact event
- 2022 WJ1, a meteoroid that impacted over Southern Ontario, Canada
Notes
References
- ^ a b c d "2023 CX1". Minor Planet Center. Retrieved 13 February 2023.
- ^ a b c d e f g "MPEC 2023-C103 : 2023 CX1". Minor Planet Electronic Circular. Minor Planet Center. 13 February 2023. Retrieved 13 February 2023.
- ^ a b "JPL Small-Body Database Browser: (2023 CX1)" (2023-02-13 last obs.). Jet Propulsion Laboratory. Retrieved 13 February 2023.
- ^ "Perihelion @ 2.3377 AU on 28 Feb 2022". JPL Horizons (Perihelion occurs when rdot flips from negative to positive). Jet Propulsion Laboratory. Retrieved 13 February 2023.
- ^ a b c Whitt, Kelly Kizer (12 February 2023). "Small asteroid impacts Earth's atmosphere over France". EarthSky. Retrieved 13 February 2023.
- ^ a b c Antier, Karl (13 February 2023). "Imminent asteroid entry over the Channel on Feb.13, 02h59 UT". International Meteor Organization. Retrieved 13 February 2023.
- ^ a b c "Horizons Batch from 2023-Feb-12 20:18 and 2023-Feb-13 03:00". JPL Horizons. Jet Propulsion Laboratory. Retrieved 13 February 2023.
- ^ "Horizons Batch on 2023-Feb-13 02:46:55". JPL Horizons. Jet Propulsion Laboratory. Retrieved 13 February 2023.
- ^ "Fireball Events in 2023 → 937-2023". International Meteor Organization. 13 February 2023. Retrieved 13 February 2023.
External links
- 2023 CX1 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2023 CX1 at ESA–space situational awareness
- 2023 CX1 at the JPL Small-Body Database
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