| Revision as of 16:48, 4 August 2024 editMeli thev (talk | contribs)Extended confirmed users3,300 edits connection to the balladTag: Visual edit: Switched← Previous edit | Revision as of 17:08, 4 August 2024 edit undoMeli thev (talk | contribs)Extended confirmed users3,300 edits added video to galleryNext edit → | ||
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| == Gallery == | == Gallery == | ||
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| File:NAEcupEAPKNgEsj-.webm|2024 BX<sub>1</sub> ] on 21 January 2024 over Berlin | |||
| File:Maps14245-fig-0009-m(a).jpg|Sample of Ribbeck found after 6 days and showing terrestrial alteration, giving the sample a brown color | File:Maps14245-fig-0009-m(a).jpg|Sample of Ribbeck found after 6 days and showing terrestrial alteration, giving the sample a brown color | ||
| File:Maps14245-fig-0008-m(a).jpg|] in Ribbeck, showing fracture lines, indicative of shock metamorphism | File:Maps14245-fig-0008-m(a).jpg|] in Ribbeck, showing fracture lines, indicative of shock metamorphism | ||
Revision as of 17:08, 4 August 2024
2024 meteoroid52°37′15″N 12°45′40″E / 52.62083°N 12.76111°E / 52.62083; 12.76111
 A fragment of 2024 BX1 | |
| Discovery | |
|---|---|
| Discovered by | Krisztián Sárneczky |
| Discovery site | Piszkéstető Stn. |
| Discovery date | 20 January 2024 |
| Designations | |
| MPC designation | 2024 BX1 |
| Alternative designations | Sar2736, Ribbeck |
| Minor planet category | NEO · Apollo |
| Orbital characteristics | |
| Epoch 13 September 2023 (JD 2460200.5) | |
| Uncertainty parameter 6 | |
| Observation arc | 2.49 h (150 min) |
| Aphelion | 1.833 AU |
| Perihelion | 0.835 AU |
| Semi-major axis | 1.334 AU |
| Eccentricity | 0.3740 |
| Orbital period (sidereal) | 1.54 yr (563.0 d) |
| Mean anomaly | 246.680° |
| Mean motion | 0° 38 22.038 / day |
| Inclination | 7.266° |
| Longitude of ascending node | 300.141° |
| Argument of perihelion | 243.604° |
| Earth MOID | 0.000532 AU (79,600 km) |
| Physical characteristics | |
| Mean diameter | 25±5 cm |
| Mass | >1.8 kg |
| Absolute magnitude (H) | 32.795±0.353 32.84 |
2024 BX1, previously known under its temporary designation Sar2736, was a metre-sized asteroid or meteoroid that entered Earth's atmosphere on 21 January 2024 00:33 UTC and disintegrated as a meteor over Berlin. It was discovered less than three hours before impact by Hungarian astronomer Krisztián Sárneczky at Konkoly Observatory's Piszkéstető Station in the Mátra Mountains, Hungary. The fireball was observed by the cameras of the AllSky7 and Fripon networks. 2024 BX1 is the eighth asteroid discovered before impacting Earth, and is Sárneczky's third discovery of an impacting asteroid. Before it impacted, 2024 BX1 was a near-Earth asteroid on an Earth-crossing Apollo-type orbit.
Meteorite fragments of 2024 BX1 were found five days after it entered the Earth's atmosphere. Searches were conducted by the German Aerospace Center (DLR), the Berlin universities, members of the Meteor Working Group and meteorite hunters. The first samples were found by Polish searchers close to the village Ribbeck (Nauen). It was later found to be an aubrite, a rare group of meteorites. A study from July 2024 describe the meteorite fragments that are called Ribbeck. About 200 pieces were collected, totalling in about 1.8 kg. The study measured short-lived radionuclides in the samples AKM01 and AKM05. Ribbeck is consistent with a brecciated aubrite. The samples are made up of 76 ±3 vol% nearly FeO-free enstatite, 15.0 ±2.5 vol% albitic plagioclase, 5.5 ±1.5 vol% fosterite and 3.5 ±1.0 vol% of opaque phases (mainly sulfides and metals), with traces of nearly FeO-free diopside and K-feldspar. The researchers found that the plagioclase fragments in Ribbeck formed from coarse-grained magmatic rock that cooled slowly and that were fragmented by impacts on the parent body. The albitic plagioclase content is one of the highest among all aubrites, similar to the aubrite of Bishopville (see Meteorite fall). This causes Europium measurements to be higher in both meteorites. It is suggested that 2024 BX1 belongs to the Hungaria family and therefore is similar to the E/X-type asteroids. The rock showed signs of shock metamorphism and terrestrial weathering. The 4 days of weathering in the snow/melted snow gave the samples a brown color and the breakdown of sulfides gave the samples a smell of hydrogen sulfide (rotten egg smell). Some minerals (oldhamite, a Cr-rich phase and a Ti-rich phase) showed strong alteration, but it is unclear if this happened partially before the meteorite impact or if it is only due to weathering. The researchers estimated that the parent body of Ribbeck is 4.5 billion years old. Aubrites formed very early within a few Million years after the formation of calcium-aluminium-rich inclusions (~4.56 billion years old) and for Ribbeck ages were determined with the help of K–Ar dating (~3.3–3.7 billion years) and Uranium/Thorium-Helium dating (~2.3–2.5 billion years). These younger ages are indications for impact events.
Researchers described the meteorite fragments as "cosmic pears", in remembrance of the ballad Herr von Ribbeck auf Ribbeck im Havelland by Theodor Fontane. . According to the ballad Ribbeck gave pears to passing children and after his death a legendary pear tree did grow on his grave, providing children with free pears.
Exhibition
The meteorite was exhibited at the Natural History Museum in Berlin for a few weeks in March 2024.
Gallery
- 2024 BX1 bolide on 21 January 2024 over Berlin
-
Sample of Ribbeck found after 6 days and showing terrestrial alteration, giving the sample a brown color
-
Olivine in Ribbeck, showing fracture lines, indicative of shock metamorphism
-
Thin sections of 2024 BX1 samples, with enstatite crystals (En), olivine (Ol), plagioclase (Plag) and metal (Met)
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See also
- Impact event
- Asteroid impact prediction
- 2023 CX1, the seventh asteroid discovered before being successfully predicted to impact Earth, and the third asteroid to have its meteorite fall collected
References
- ^ "2024 BX1". Minor Planet Center. Retrieved 21 January 2024.
- ^ "MPEC 2024-B76 : 2024 BX1". Minor Planet Electronic Circular. Minor Planet Center. 21 January 2024. Retrieved 21 January 2024.
- ^ "Small-Body Database Lookup: (2024 BX1)" (2024-01-21 last obs.). Jet Propulsion Laboratory. Retrieved 21 January 2024.
- ^ Bischoff, Addi; Patzek, Markus; Barrat, Jean‐Alix; Berndt, Jasper; Busemann, Henner; Degering, Detlev; Di Rocco, Tommaso; Ek, Mattias; Harries, Dennis; Godinho, Jose R. A.; Heinlein, Dieter; Kriele, Armin; Krietsch, Daniela; Maden, Colin; Marchhart, Oscar (31 July 2024). "Cosmic pears from the Havelland (Germany): Ribbeck, the twelfth recorded aubrite fall in history". Meteoritics & Planetary Science. doi:10.1111/maps.14245. ISSN 1086-9379.
- O'Callaghan, Jonathan (10 February 2024). "Fragments of Asteroid With Mystery Origin Are Found Outside Berlin - Astronomers tracked the entry of a small space rock into Earth's atmosphere, and then meteorite hunters made an unexpected discovery". The New York Times. Archived from the original on 10 February 2024. Retrieved 10 February 2024.
- "german@allsky7.groups.io | SAR2736". allsky7.groups.io. Retrieved 21 January 2024.
- "Single event view (773388)". fireball.fripon.org. Retrieved 21 January 2024.
- King, Bob (26 January 2024). "ASTEROID 2024 BX1: FROM A DOT OF LIGHT TO FIREBALL TO ROCKS ON THE GROUND". Sky & Telescope. Retrieved 27 January 2024.
- @SAL_DLR_Berlin (26 January 2024). "And here we go! The joint team from @DLR_en, @mfnberlin and @FU_Berlin managed to recover two fragments that are thought to be from asteroid #2024BX1. We will still be going to the field in the next few days with the hope of finding more material to study! #meteorites" (Tweet) – via Twitter.
- "Asteroid that impacted near Berlin identified as a rare Aubrite". SETI. 5 February 2024. Retrieved 6 February 2024.
- ^ Design, Universität Münster, University of Münster, Web and. "Ribbeck meteorite from the Havelland is 4.5 billion years old". www.uni-muenster.de. Retrieved 4 August 2024.
{{cite web}}: CS1 maint: multiple names: authors list (link) - "Spectacular meteorite to be exhibited at the Museum für Naturkunde Berlin". Museum für Naturkunde. 5 March 2024. Retrieved 4 August 2024.
External links
- 2024 BX1 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2024 BX1 at ESA–space situational awareness
- 2024 BX1 at the JPL Small-Body Database
- 2024 BX1: 8th predicted Earth impact! | IMO at International Meteor Organization
- 2024 BX1 wiki.meteoritica.pl (in Polish)
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