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'''{{mp|2024 BX|1}}''', previously known under its temporary designation '''Sar2736''', was a metre-sized ] or ] that entered Earth's atmosphere on 21 January 2024 00:33 ] and disintegrated as a ] over ].<ref name="MPEC-2024-B76"/><ref name="NYT-20240210">{{cite news |last=O'Callaghan |first=Jonathan |title=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. |url=https://www.nytimes.com/2024/02/10/science/aubrite-asteroid-meteorite-berlin.html |date=10 February 2024 |work=] |url-status=live |archiveurl=https://archive.today/20240210183139/https://www.nytimes.com/2024/02/10/science/aubrite-asteroid-meteorite-berlin.html |archivedate=10 February 2024 |accessdate=10 February 2024 }}</ref> It was discovered less than three hours before impact by Hungarian astronomer ] at ]'s ] in the ], ].<ref name="MPEC-2024-B76"/> The ] was observed by the cameras of the AllSky7<ref>{{Cite web |title=german@allsky7.groups.io {{!}} SAR2736 |url=https://allsky7.groups.io/g/german/topic/103861190#5030 |access-date=2024-01-21 |website=allsky7.groups.io}}</ref> and Fripon<ref>{{Cite web |title=Single event view (773388) |url=https://fireball.fripon.org/displaysingle.php?id=773388 |access-date=2024-01-21 |website=fireball.fripon.org}}</ref> networks. {{mp|2024 BX|1}} is the eighth asteroid discovered before impacting Earth, and is Sárneczky's third discovery of an impacting asteroid. Before it impacted, {{mp|2024 BX|1}} was a ] on an Earth-crossing ] orbit. '''{{mp|2024 BX|1}}''', previously known under its temporary designation '''Sar2736''', was a metre-sized ] or ] that entered Earth's atmosphere on 21 January 2024 00:33 ] and disintegrated as a ] over ].<ref name="MPEC-2024-B76"/><ref name="NYT-20240210">{{cite news |last=O'Callaghan |first=Jonathan |title=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. |url=https://www.nytimes.com/2024/02/10/science/aubrite-asteroid-meteorite-berlin.html |date=10 February 2024 |work=] |url-status=live |archiveurl=https://archive.today/20240210183139/https://www.nytimes.com/2024/02/10/science/aubrite-asteroid-meteorite-berlin.html |archivedate=10 February 2024 |accessdate=10 February 2024 }}</ref> It was discovered less than three hours before impact by Hungarian astronomer ] at ]'s ] in the ], ].<ref name="MPEC-2024-B76"/> The ] was observed by the cameras of the AllSky7<ref>{{Cite web |title=german@allsky7.groups.io {{!}} SAR2736 |url=https://allsky7.groups.io/g/german/topic/103861190#5030 |access-date=2024-01-21 |website=allsky7.groups.io}}</ref> and Fripon<ref>{{Cite web |title=Single event view (773388) |url=https://fireball.fripon.org/displaysingle.php?id=773388 |access-date=2024-01-21 |website=fireball.fripon.org}}</ref> networks. {{mp|2024 BX|1}} is the eighth asteroid discovered before impacting Earth, and is Sárneczky's third discovery of an impacting asteroid. Before it impacted, {{mp|2024 BX|1}} was a ] on an Earth-crossing ] orbit.


Meteorite fragments of {{mp|2024 BX|1}} were found five days after it entered the Earth's atmosphere.<ref>{{Cite web |last=King |first=Bob |authorlink= Bob P. King |date=26 January 2024 |title=ASTEROID 2024 BX1: FROM A DOT OF LIGHT TO FIREBALL TO ROCKS ON THE GROUND |url=https://skyandtelescope.org/astronomy-news/asteroid-2024-bx1-from-a-dot-of-light-to-fireball-to-rocks-on-the-ground/ |access-date=27 January 2024 |website=Sky & Telescope}}</ref><ref>{{Cite tweet|user=SAL_DLR_Berlin|number=1750931305351504356|title=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}}</ref> It was later found to be an ], a rare group of meteorites.<ref>{{cite news|title=Asteroid that impacted near Berlin identified as a rare Aubrite|url=https://www.seti.org/press-release/asteroid-impacted-near-berlin-identified-rare-aubrite|website=SETI|date=5 February 2024|accessdate=6 February 2024}}</ref> A study from July 2024 describe the meteorite fragments that are called '''Ribbeck''', named after the village ] close to the sample find. About 200 pieces were collected, totalling in about 1.8 kg. The study measured short-lived radionuclides in the samples AKM01 and AKM05. The sample is consistent with a ] aubrite. The researchers found that the plagioclase fragments in Ribbeck formed from coarse-grained ] that cooled slowly and that were fragmented by ] on the parent body. The samples are made up of 76 ±3 vol% nearly FeO-free ], 15.0 ±2.5 vol% albitic ] and 3.5 ±1.0 vol% of opaque phases (mainly ] and metals), with traces of nearly FeO-free ] and ]. The albitic plagioclase content is one of the highest among all aubrites, similar to the aubrite of Bishopville (see ]). This causes ] to be higher in both meteorites, when compared to other samples. It is suggested that 2024 BX1 belongs to the ] and therefore is similar to the ]. The rock showed signs of ] 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 ] (rotten egg smell). Some minerals showed strong alteration, but it is unclear if this is related to the impact event.<ref>{{Cite journal |last=Bischoff |first=Addi |last2=Patzek |first2=Markus |last3=Barrat |first3=Jean‐Alix |last4=Berndt |first4=Jasper |last5=Busemann |first5=Henner |last6=Degering |first6=Detlev |last7=Di Rocco |first7=Tommaso |last8=Ek |first8=Mattias |last9=Harries |first9=Dennis |last10=Godinho |first10=Jose R. A. |last11=Heinlein |first11=Dieter |last12=Kriele |first12=Armin |last13=Krietsch |first13=Daniela |last14=Maden |first14=Colin |last15=Marchhart |first15=Oscar |date=2024-07-31 |title=Cosmic pears from the Havelland (Germany): Ribbeck, the twelfth recorded aubrite fall in history |url=https://onlinelibrary.wiley.com/doi/10.1111/maps.14245 |journal=Meteoritics & Planetary Science |language=en |doi=10.1111/maps.14245 |issn=1086-9379}}</ref> Meteorite fragments of {{mp|2024 BX|1}} were found five days after it entered the Earth's atmosphere.<ref>{{Cite web |last=King |first=Bob |authorlink= Bob P. King |date=26 January 2024 |title=ASTEROID 2024 BX1: FROM A DOT OF LIGHT TO FIREBALL TO ROCKS ON THE GROUND |url=https://skyandtelescope.org/astronomy-news/asteroid-2024-bx1-from-a-dot-of-light-to-fireball-to-rocks-on-the-ground/ |access-date=27 January 2024 |website=Sky & Telescope}}</ref><ref>{{Cite tweet|user=SAL_DLR_Berlin|number=1750931305351504356|title=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}}</ref> It was later found to be an ], a rare group of meteorites.<ref>{{cite news|title=Asteroid that impacted near Berlin identified as a rare Aubrite|url=https://www.seti.org/press-release/asteroid-impacted-near-berlin-identified-rare-aubrite|website=SETI|date=5 February 2024|accessdate=6 February 2024}}</ref> A study from July 2024 describe the meteorite fragments that are called '''Ribbeck''', named after the village ] close to the sample find. About 200 pieces were collected, totalling in about 1.8 kg. The study measured short-lived radionuclides in the samples AKM01 and AKM05. The sample is consistent with a ] aubrite. The researchers found that the plagioclase fragments in Ribbeck formed from coarse-grained ] that cooled slowly and that were fragmented by ] on the parent body. The samples are made up of 76 ±3 vol% nearly FeO-free ], 15.0 ±2.5 vol% albitic ], 5.5 ±1.5 vol% ] and 3.5 ±1.0 vol% of opaque phases (mainly ] and metals), with traces of nearly FeO-free ] and ]. The albitic plagioclase content is one of the highest among all aubrites, similar to the aubrite of Bishopville (see ]). This causes ] to be higher in both meteorites, when compared to other samples. It is suggested that 2024 BX1 belongs to the ] and therefore is similar to the ]. The rock showed signs of ] 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 ] (rotten egg smell). Some minerals showed strong alteration, but it is unclear if this is related to the impact event.<ref>{{Cite journal |last=Bischoff |first=Addi |last2=Patzek |first2=Markus |last3=Barrat |first3=Jean‐Alix |last4=Berndt |first4=Jasper |last5=Busemann |first5=Henner |last6=Degering |first6=Detlev |last7=Di Rocco |first7=Tommaso |last8=Ek |first8=Mattias |last9=Harries |first9=Dennis |last10=Godinho |first10=Jose R. A. |last11=Heinlein |first11=Dieter |last12=Kriele |first12=Armin |last13=Krietsch |first13=Daniela |last14=Maden |first14=Colin |last15=Marchhart |first15=Oscar |date=2024-07-31 |title=Cosmic pears from the Havelland (Germany): Ribbeck, the twelfth recorded aubrite fall in history |url=https://onlinelibrary.wiley.com/doi/10.1111/maps.14245 |journal=Meteoritics & Planetary Science |language=en |doi=10.1111/maps.14245 |issn=1086-9379}}</ref>


== See also == == See also ==

Revision as of 13:52, 4 August 2024

2024 meteoroid

2024 BX1
A fragment of 2024 BX1
Discovery
Discovered byKrisztián Sárneczky
Discovery sitePiszkéstető Stn.
Discovery date20 January 2024
Designations
MPC designation2024 BX1
Alternative designationsSar2736
Minor planet categoryNEO · Apollo
Orbital characteristics
Epoch 13 September 2023 (JD 2460200.5)
Uncertainty parameter 6
Observation arc2.49 h (150 min)
Aphelion1.833 AU
Perihelion0.835 AU
Semi-major axis1.334 AU
Eccentricity0.3740
Orbital period (sidereal)1.54 yr (563.0 d)
Mean anomaly246.680°
Mean motion0° 38 22.038 / day
Inclination7.266°
Longitude of ascending node300.141°
Argument of perihelion243.604°
Earth MOID0.000532 AU (79,600 km)
Physical characteristics
Mean diameter≈1 m
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. 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, named after the village Ribbeck close to the sample find. About 200 pieces were collected, totalling in about 1.8 kg. The study measured short-lived radionuclides in the samples AKM01 and AKM05. The sample is consistent with a brecciated aubrite. 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 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 albitic plagioclase content is one of the highest among all aubrites, similar to the aubrite of Bishopville (see Meteorite fall). This causes Europium to be higher in both meteorites, when compared to other samples. 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 showed strong alteration, but it is unclear if this is related to the impact event.

See also

References

  1. ^ "2024 BX1". Minor Planet Center. Retrieved 21 January 2024.
  2. ^ "MPEC 2024-B76 : 2024 BX1". Minor Planet Electronic Circular. Minor Planet Center. 21 January 2024. Retrieved 21 January 2024.
  3. ^ "Small-Body Database Lookup: (2024 BX1)" (2024-01-21 last obs.). Jet Propulsion Laboratory. Retrieved 21 January 2024.
  4. 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.
  5. "german@allsky7.groups.io | SAR2736". allsky7.groups.io. Retrieved 21 January 2024.
  6. "Single event view (773388)". fireball.fripon.org. Retrieved 21 January 2024.
  7. 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.
  8. @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.
  9. "Asteroid that impacted near Berlin identified as a rare Aubrite". SETI. 5 February 2024. Retrieved 6 February 2024.
  10. 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.

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