South Ural Bolide and ... NEW STONE METEORITE "CHELYABINSK"!!!
The fireball flew on February 15, 2013 at 09:22 (03:22 UTC) in Chelyabinsk region at supersonic speed and with bright flashes of light along the trajectory of the NEE-SWW(Chelyabinsk-Miass-Satka). Acoustic wave brought some minor damages in the form of broken glasses and some damages of old buildings. Lake Chebarkul, village Kuvashi (near Zlatoust), Zvyagino village are the probable locations of pieces of the falling bolide.
Update October 16, 2013
THE LARGEST FRAGMENT OF METEORITE CHELYABINSK PULLED FROM THE BOTTOM OF LAKE CHEBARKUL
October 16, 2013.
The largest fragment of meteorite Chelyabinsk pulled from the bottom of Lake Chebarkul. Operation began early in the morning, October 16, 2013. Divers tore off a stone from an oozy bottom and on special cables by means of a tow pulled out it on a surface. The find surpassed all expectations: the meteorite appeared twice more, than expected. When a stone put on scales, they didn't sustain and broke. By approximate calculations, the weight of a space cobble-stone makes about 570 kilograms. Now it deliver to Chelyabinsk, and then will transfer to scientists for researches.
Update June 28, 2013
International scientific-practical conference "ASTEROIDS AND COMETS. CHELYABINSK EVENT AND STUDY OF THE METEORITE FALLING INTO THE LAKE CHEBARKUL". Chebarkul, June, 21-22. 2013.
On June, 21-22, 2013 the International scientific-practical conference "ASTEROIDS AND COMETS. CHELYABINSK EVENT AND STUDY OF THE METEORITE FALLING INTO THE LAKE CHEBARKUL" was taken place in Chebarkul city.
THE RESULTS OF METEORITE CHELYABINSK STUDY. THE JOINT SEMINAR AT SAI MSU. MARCH 21, 2013.
On March 21, 2013 at 14:00 Sternberg Astronomical Institute (SAI MSU) held joint seminar organized INASAN, IDG, Vernadsky Institute, IKI RAS and SAI MSU for the results of meteorite Chelyabinsk study.
Reports were presented:
V.V. Emelyanenko (INASAN RAS), S.A. Naroenkov (INASAN RAS), O.P. Popova (IDG RAS). Chelyabinsk event: the observational data and the first results of the determination of celestial body dynamic characteristics.
The entry of a space body into Earth atmosphere on February 15, 2013, led to the Chelyabinsk event has a rich observational material.
The possibility of use of various data for research of the Chelyabinsk phenomenon is discussed.
The review of preliminary results of definition of celestial body dynamic characteristics is given.
D.D. Badyukov (Vernadsky Institute RAS) Meteorite Chelyabinsk: collecting substance, petrography, mineralogy and shock history.
Chelyabinsk meteorite belongs to the ordinary chondrites, which are 80% of the meteorites flux on Earth. One of its features is the minimum terrestrial contamination. According to the chemical composition, it belongs to LL with the metal content of about 1.5%. There are 2 types of material - light and dark.The light component is represented by the equilibrium chondrite of 5th petrologic type (LL5), subjected to a moderate shock metamorphism (S4) with multiple shock veins.
The dark component belongs to impact melt breccias and consists of fragments of LL5, embedded in a matrix of the melt. It is chemically very similar to the light variety, although it differs in details.
O.P.Popova, V.V.Shuvalov, Yu.S.Rybnov, V.A.Harlamov (IDG RAS) The first estimates of the physical parameters of the Chelyabinsk meteoroid.
The first estimates of Chelyabinsk meteoroid physical parameters are presented and comparison with other known events is carried out.
N.N. Chugai (INASAN RAS) Energy of Chelyabinsk phenomenon.
The picture of the air blast caused by braking of the Chelyabinsk meteorite in the atmosphere is presented.
An estimate of initial kinetic energy of a meteorite on the basis of data on distribution of a shock wave in the atmosphere and effect of a shock wave at a surface is received.
Update March 14, 2013
THE RESULTS OF STUDY OF METEORITE "CHELYABINSK". PRESS-CONFERENCE AT VERNADSKY INSTITUTE
Russian Meteorite Committee press-conference took place at V.I. Vernadsky Institute on March 14, 2013 in Moscow.
A Meteorite Committee Chairman, Vernadsky Institute director, academician Eric M. Galimov and his colleagues presented the results of a study of Chelyabinsk meteorite.
In Russia falls of such meteorites were not previously noted. We could assume that the event 15/Feb./2013 Chelyabinsk is the most grandiose falling of chondrite LL5.
Update February 21, 2013
THE FIRST COLLECTION OF METEORITE "CHELYABINSK" SAMPLES
Expedition of Meteorite Committee of Russian Academy of Sciences (KMET RAN) collected the first collection of a meteorite "Chelyabinsk".
One of samples is shawn on a photo. The black surface of stone is melting crust, produced in atmosphere.
The preliminary analysis showed that the meteorite belongs to chemical type L or LL, petrologic type 5. The meteorite is probably non-uniform.
According to Cyril Lorenz, meteorite scientist of the Laboratory of Meteoritics, further study of the samples revealed thet meteor shower samples have different compositions (chondrite, breccia, impact melt). Thus meteorite is a shock melted breccia .
To establish a ratio of components is the most interesting scientific task.
The sections of meteorite "Chelyabinsk". A shock melted breccia structure.
Since the composition of the meteorite fragments seen in the structure of the surface and the fusion crust, the ratio of the different components in the composition of the meteorite can be set by the large number of photos of different finds.
The Committee on Meteorites, resolving this important scientific task, asked any meteorite finders and owners to send the high quality photoes (possible anonymously) of their meteorite samples (with ruler scale) to address firstname.lastname@example.org or using online form http://chel-meteorit.youini.ru/
Update February 17, 2013
METEORITE "Chelyabinsk" WAS FOUND
Moscow, Feb. 17 — RIA News. Scientists discovered in the Lake Chebarkul fragments of the meteorite, which fell on Friday morning near Chelyabinsk. Their extraterrestrial nature of the chemical studies confirmed, Victor Grokhovsky, meteorite committee member of Russian Academy of Science, Ural Federal University, told their extraterrestrial nature were confirmed by the chemical studies .
TV Rossiya 24. Feb.18, 2013. Viktor Grokhovsky,Meteorite Commettee RAS: chemical analyses confirmed that peaces around pool in the Lake Chebarkul are chondrite, stone meteorite.
Grokhovsky said "We just finished a study. We confirm that the particles of matter (53 particles), found our expedition (UrFU) in the Lake Chebarkul do have a meteorite nature. This is a stone meteorite, an ordinary chondrite. We diagnosed all common chondritic minerals: the metallic iron, olivine, and sulfite and melted crust."
The content of metal particles is more than 8%, he said. Chemical analysis was carried out in the laboratory of University Research and Education Center "Nanotech", said Grokhovsky. The specialist added that for registration of a new meteor in the international catalogue more complete chemical analysis will be made. Meteorite will be called "Chebarkul" for the international catalogue"
The Chelyabinsk meteorite almost brought down the plane
"At approach to Chelyabinsk, already on decrease, prepared for landing and saw a bright luminescence on the right on a board", - the commander of crew of the Bombardier CRJ-200 liner of the Tatarstan airline "Ak Bars Aero" Alexander Arhipov told NTV.
According to the second pilot, a celestial body heat scorched his face.. However he managed to notice that the bolide was divided into some fragments.
"I look, it scattered on three parts. Later I saw these huge pieces. They all flew to the side, burning", - the co-pilot Sergei Kotov said.
Vice-Governor of the Chelyabinsk region Igor Murogov said Feb. 16 about the finish of searching for fragments of a meteorite that fell in the Lake Chebarkul.
Earlier it was reported that the lake Chebarkul fragments of the celestial body could be found.
Divers did not find any debris falling in the Chelyabinsk region of the meteor body at the bottom of Lake Chebarkul. This was reported in the press service of the regional emergency department. Previously it was thought that's where the meteorite fell, forming pool.
Deputy head of the region reported that researchers mistaken for a meteorite impact site hole. In fact, the area of open water formed due to other reasons, - news agency RSN reported.
Apart oz.Chebarkul, searches were conducted at the village Zvyagino and Kuvashi. According to the assessment by the Commission of the Government of the Chelyabinsk region, finds of the celestial body remains failed.
The regional authorities pledged to assist scientists who agree to come to the region to investigate the unusual event.
Morning, February 15, 2013 at Lake Chebarkul local fishermen have witnessed the fall of the celestial body.
According to them, first appeared in the sky shining point, which rapidly increased in size, and then there was an explosion in all directions flew around 7 wreckage. One fell near the opposite shore of the city, into the lake surface exploding the column of ice, water and steam. The result was a large round pool, with a diameter of about 8 meters.
View from CCTV Camera. Probably oil-transfer station Etkul. View to the west.Flashes and falling of pieces meteorites.
FEBRUARY 19, 2013. By Ben Solomon (http://www.nytimes.com/2013/02/19/)In a small Siberian village, residents are finding that rock fragments that rained down after Friday's meteor over Russia. Sasha Zarezina, 8, said of her find as she dug for meteorites.
TV Rossiya 24. Feb.17, 2013. 30 km south from Chelyabinsk