#2023cx1 — Public Fediverse posts

Catastrophic disruption of asteroid #2023CX1 and implications for planetary defense: https://arxiv.org/abs/2509.12362 -> Western researchers support international collaboration for planetary defence: https://news.westernu.ca/2025/09/planetary-defence/ - meteor physicists from Western Space aid in first comprehensive study of asteroid from space to impact on Earth.

Today on the arXiv:

Egal et al. 2025, "Catastrophic disruption of asteroid 2023 CX1 and implications for planetary defense" - https://arxiv.org/abs/2509.12362

Reviewing the case of the very small asteroid #2023CX1, which was discovered shortly before flashing in the sky above Normandy.

And with a great many people in "et al." .

The latest addition to my collection of books by people I know:

Patrick Michel, "À la rencontre des astéroïdes".

I had known Patrick was featuring #DARTMission results, but he even managed to add in mention of #2023CX1 before the book went to the printers.

And I am not surprised by the references to American movies and British rock music.

As just reported in https://www.facebook.com/groups/1299728060220815/posts/2161635280696751/ by now 14 (!) #meteorites from exploded asteroid #2023CX1 have been collected in #Normandy - here is the latest strewn field prediction map from https://www.strewnify.com/y20230213_02z_31u (where the biggest piece was found has not been disclosed yet but the information was used for updating the map).

Pretty good rocks.
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RT @VigieCiel
Météorites normandes : récit d’une folle semaine 🤩 #2023cx1 #sciencesparticipatives #citizenscience
https://www.vigie-ciel.org/2023/02/22/meteorites-normandes-bilan-dune-folle-semaine/
https://twitter.com/VigieCiel/status/1628465172653256714

For the record re. the #meteorites from #2023CX1 the independent collectors Steve Arnold and Roberto Vargas had already on February 20th reported finding "the new main mass! A beautiful 178g stone, with a broken face and visible #chondrules" in https://twitter.com/hellospacething/status/1627719795389890560 but Vigie Ciel hadn't included it in their tally published on the 22nd. We'll see how this turns out ...

So far 12 #meteorites from #2023CX1 have been recovered, a big one (90 grams, the first find) and 11 others from 2 to 24 grams: https://www.vigie-ciel.org/2023/02/22/meteorites-normandes-bilan-dune-folle-semaine/ (includes a #strewnfield map).

Meanwhile here is a video summary of the #2023CX1 fall and its seven meteorites: https://www.youtube.com/watch?v=WvCtJNnFD_w

Yay, according to https://allsky7.groups.io/g/main/message/42 the first #meteorite from the #Texas event has been recovered - and together with another such success in Italy (see http://www.prisma.inaf.it/index.php/2023/02/18/eccola-trovata-la-meteorite-di-san-valentino/ for details) and at least seven meteorites from the French case (with the object #2023CX1 seen before it hit Earth) we have just seen THREE fireballs with collected fresh meteorites in a single week! Each such event is rare but a cluster of three is truly unique in geophysics history, AFAIK.

An update on the #asteroid #2023cx1 and the hunt for #meteorites
https://youtu.be/WvCtJNnFD_w

By now seven (!) meteorites from #2023CX1 have been found: https://twitter.com/VigieCiel/status/1626647526995595274 7 and https://twitter.com/cieletespace/status/1626601702827884545 and https://twitter.com/LouBenoiste/status/1626665332680056837

Looks like an ordinary chondrite?
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RT @VigieCiel
Et de 1, et de 2 et de 3 et… de 7 🤩
Quelle aventure incroyable ! #2023CX1 #sciencesparticipatives
https://twitter.com/VigieCiel/status/1626647526995595274

#2023CX1 #Meteor Flash
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap230217.html

#APOD

A potential second meteorite from #2023CX1: https://twitter.com/VigieCiel/status/1626315323564601347 - verification pending.

A detailled article in French how the first #2023CX1 meteorite was found: https://www.vigie-ciel.org/2023/02/15/une-meteorite-normande-issue-de-2023-cx1-retrouvee/. And a summary in English: https://www.imo.net/pieces-of-2023-cx1-recovered-in-normandy/

First meteorites from #2023CX1 found in Normandy.

And I see that @SETIInstitute's Peter Jenniskens did not waste any time traveling over there.
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RT @SETIInstitute
FRIPON/Vigie-Ciel finds a fragment of asteroid 2023CX1 in Seine Maritime!!! The discovery was made by Loïs Leblanc, an 18-year-old student, part of the field research team #2023CX1 #SAR2667

SETI's Peter Jenniskens is on the far right of the photo! https://twitter.com/V…
https://twitter.com/SETIInstitute/status/1625968813580898306

And the first #meteorite from the asteroid #2023CX1 gone #fireball has been found: https://twitter.com/VigieCiel/status/1625946780117438484

first fragment of the 13 Feb small asteroid impact found in France:
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RT @VigieCiel
🤩☄️ FRIPON/Vigie-Ciel retrouve un fragment de l’astéroïde 2023CX1 en Seine Maritime !!! La découverte a été faite par Loïs Leblanc, étudiante de 18 ans, faisant partie de l’équipe de recherche sur le terrain #2023CX1 #SAR2667
https://twitter.com/VigieCiel/status/1625946780117438484

#2023CX1 dans @lefigaro: https://video.lefigaro.fr/figaro/video/un-meteore-apercu-dans-le-ciel-francais-frappe-latmosphere-terrestre/ .

Et @libe: https://www.liberation.fr/sciences/espace/le-meteoroide-sar2627-a-illumine-le-nord-de-la-france-cette-nuit-20230213_6UHGYZL6VJEX7PHIVCOJM3TG5A/

Further calculations are strengthening the case for #meteorites from the asteroid #2023CX1 gone #fireball having reached solid ground in France: see the thread https://twitter.com/scute1133/status/1625288025004466178 and https://twitter.com/strewnify/status/1625629662792523776

Good luck to the meteorite searchers!
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RT @strewnify
Initial flight path simulation for asteroid 2023 CX1 (previously #Sar2667) puts the strewn field just east of Héberville in Normandy region of France. A more detailed map and KMX file will be posted later at http://www.strewnify.com
#2023CX1 Happy hunting!
https://twitter.com/strewnify/status/1625629662792523776

Hope has increased that the exploded mini-asteroid #2023CX1 could have dropped #meteorites on the French Channel coast: https://www.vigie-ciel.org/2023/02/14/4964/ (the hed "Rain of Stones in #Normandy!" is a bit over the top at this point as nothing has been found yet).

Part of three out of the seven or eight largest recent impactors onto Earth having been discovered in advance is just chance.

Part of it is survey programs being far better at finding small impactors than they used to be.

#2023CX1

An interesting thing I've just noticed:

In the past year, atmospheric monitoring has reported 7 or 8 impacts onto Earth with energy ~1 kiloton TNT-equivalent or more - https://cneos.jpl.nasa.gov/fireballs/ .

Three of those have been found in advance: #2022EB5, #2022WJ1, and now #2023CX1.

#2023CX1
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RT @elperiodico
"La detección de 2023 CX1 se puede interpretar más bien como un éxito de los programas de seguimiento de asteroides, uno de los mayores ejemplos de colaboración científica internacional".

✍Por @Josep_Trigo http://elperiodi.co/kun5r2
https://twitter.com/elperiodico/status/1625224102301556737

Local French media picking up the #2023CX1 story, although I do not find it in the big national dailies today.
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RT @UnionArdennais
Un impressionnant astéroïde a illuminé le ciel français https://www.lunion.fr/id456093/article/2023-02-13/video-un-impressionnant-asteroide-illumine-le-ciel-francais?utm_medium=Social&utm_source=Twitter
https://twitter.com/UnionArdennais/status/1625210208183062528

I read that the current trajectory solution for #2023CX1 is now loaded into the JPL Horizons system, in case it should help anyone who wants to search images from the past few days for precovery detections while the meteorite searchers start on the ground.

#2023CX1
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RT @IMOmeteors
☄️ CONFIRMED ASTEROID ENTRY ☄️
On February 13th, 02h 59min 21sec UT, 2023 CX1 became the 7th asteroid to be discovered before entering the Earth atmosphere: https://www.imo.net/2023-cx1-7th-predicted-earth-impact/
https://twitter.com/IMOmeteors/status/1625006847546515459