Bolide diurne Mer des Wadden-Danemark le 12/09/2019

Cela fleur bon la futur trouvaille d'une meteorite

https://watchers.news/2019/09/12/daylight-meteor-fireball-september-12-2019/?utm_source=dlvr.it&utm_medium=twitter
https://www.amsmeteors.org/2019/09/daytime-fireball-over-north-sea-on-sept-12th-2019/
https://twitter.com/BOAM_meteore/status/1172460415248490497

A 1mn11s

ça doit correspondre avec ce rapport : https://fireballs.imo.net/members/imo_view/event/2019/4385
Peut etre une nouvelle decouverte a venir ...

il est saoulant le surfeur !

Le bolide est super sur la vidéo du surfeur..

mais le blabla du surfeur gâche le spectacle

(signé le stroumpf grognon)

Excellent

Tout a fait d'accord Marc.
C'est pourquoi mon ordinateur est toujours sur Mute.

S'il n'y avait pas le surfeur pas de bolide...

ET lui son but c'était le surf pas l'entrée dans l'atmosphère de ce beau caillou spatial

Amusante coïncidence, il y avait justement un meeting de l'IAWN et SMPAG à Munich le 12 ...

Et voila Miss Flensburg 25g, un homme l'a trouvé par hasard dans son jardin

http://karmaka.de/?p=20742

retour au met bull

c'est la seule CI depuis les 1 g de Revelstoke en 1965 et Ivuna 705g en 1938

Flensburg        54°45.6873’ N, 9°22.7353’ E
Schleswig-Holstein, Germany
Confirmed fall: 2019 Sept 12
Classification: Carbonaceous chondrite (C1, ungrouped)
History: (D. Heinlein): The bolide was observed on September 12, 2019, at 12:49:48 (UT) by hundreds of eye-witnesses from the Netherlands, Germany, Belgium, Denmark, and the UK. The daylight fireball was registered by an all-sky meteor camera from Herford, Germany, and there are several casual videos recordings (dash and security cams) from the Netherlands and Germany. One day later, on the 13 September, a small meteorite fragment resulting from this event was found by accident by Mr. Erik Due-Hansen on the lawn of his front yard in Flensburg.
Physical characteristics: (D. Heinlein): A meteorite with a total mass of 24.5 g (roughly 3.7 × 3.5 cm in size) was recovered one day after the fireball event. The rock has a very fresh black fusion crust showing contraction cracks and a thin layer of brownish secondary fusion crust on several patches where the primary crust has been broken off. The meteorite has a bulk density of 1.984 g/cm3.
Petrography: (M. Patzek and A. Bischoff, IfP): Rounded to ellipsoidal relict chondrules (0.05 to ~1 mm in apparent diameter) and clusters of sulfide and magnetite grains are set in a dark, fine-grained matrix. The most abundant phases are different phyllosilicates and S-bearing phase(s) (probably tochinilite). The relict chondrules are free of any anhydrous silicates (such as olivine and pyroxene), contain abundant phyllosilicates and carbonates, and are often surrounded by sulfide laths. Troilite, pyrrhotite, and pentlandite were identified as sulfides. Carbonates occur as calcites, Mn-bearing dolomites, and a Na-rich phase. The mean apparent size of altered chondrules is ~150 µm.
Geochemistry: (M. Patzek and A. Bischoff, IfP): No olivine and pyroxene could be identified and analyzed. Defocused beam microprobe analyses (n = 135) revealed a bulk composition (in wt%) of: O: 32.0; Na: 0.29; Mg: 10.7; Al: 1.04; Si: 11.7; K: 0.04; P: 0.12; S: 2.04; Ca: 1.15; Fe: 16.0; Co: 0.03; Ti: 0.05; Cr: 0.25; Mn: 0.15; Ni: 0.85; Total: 76.3. O-isotopes (A. Pack; UGött): The oxygen isotope compositions of three analyzed fragments of Flensburg are: δ¹⁷O = 0.0806; -0.73023; -0.57844 ‰ and δ¹⁸O = 5.3032; 3.0272; 3.2993 ‰, Δ¹⁷O = -2.677; -2.304; -2.294 ‰ (relative to a reference line with a slope of 0.5305). The data are within the ¹⁶O-rich part of the field for CM chondrites.
Classification: Carbonaceous chondrite (C1-ung, W0). This meteorite is distinct from CM chondrites for the following reasons: chondrule apparent size (150 µm) is significantly different from that in CM chondrites (~270 µm), an heavily-altered CM would have a δ¹⁸O-rich composition compared to CM2 chondrites, Zn abundance (150 ppm) is too low for a CM (200 ppm without significant variations).
Specimens: Type specimen and PTS at IfP; the main mass is also at IfP.

pour les chutes "récentes"   Flensburg C1   ( Ivuna et Revelstoke CI)

D  Heinlein   c'est Dieter que l'on voit chaque année à Ensisheim

J’arrive pas a comprendre comment on peut trouver une pierre d’un gramme d’une chute comme Revelstoke 

D’ailleurs il n’y a pas de photo

Récupérée sur de la glace...et Abbans Dessous 3,12g sur un chemin pierreux, c'est pas mal aussi.

dans le met bull
beaucoup de météorites < 10 g

Le record appartient à Vilna, 0,1 g. Deux fragments de 0,048 et 0,094 g, trouvés dans la neige sur un lac.
Il y a aussi Yoshiki, 0,1 g mais perdue en 1935.

Stelvino1 a écrit:

Le record appartient à Vilna, 0,1 g. Deux fragments de 0,048 et 0,094 g, trouvés dans la neige sur un lac.
Il y a aussi Yoshiki, 0,1 g mais perdue en 1935.

" mais perdue en 1935."

sans doute un courant d'air ou un éternuement !