Discovered a rare meteorite type

A group of researchers from Australia, Britain, the Czech Republic and the United States found on the Australian plains Nallarbor basalt meteorite (Achondrite) and traced the trajectory of his padeniya.Chasche of origin of the meteorite and the trajectory of its motion remains a mystery to scientists: we know a little more than a dozen cases (with the total number of documented falls in 1 100), where such data could poluchit.Dlya order to remedy this situation, the authors placed on the plain Nallarbor system of four automated cameras Desert Fireball Network, which produces a shooting the night sky. "These systems are created in the past, but to find meteorites on the ground covered by vegetation could not always - one of the participants commented on Research Philip Bland (Philip Bland) from Imperial College of Science, Technology and Medicine (UK). - Desert Nallarbor good that there are practically no vegetation, and black objects are allocated on a flat surface of the light. For abandoned fireballs (bright meteor) in the imagery should be the method of triangulation, scientists estimate the parameters of its trajectory and the coordinates of the probable crash site meteorita.Pervy car system has registered 20 July 2007, three fragments of the meteorite, named Bunburra Rockhole, search teams discovered in 2008 and 2009. The source of these basaltic meteorites, in most cases a large asteroid 4 Vesta; structure analysis Bunburra Rockhole, however, showed that he is likely to split from the much smaller asteroid with a diameter of only several dozen kilometrov.Po these calculations, the asteroid was in the inner region of the main belt, and the meteorite broke away from him 10-20 million years ago. Proposed in 2006, the theory argues that the formation of such asteroids was held at relatively short distances from the Sun (in the modern orbit of the Earth and Venus), and then they were thrown into the region of the main belt, and if so, Bunburra Rockhole may constitute an example of matter from which Earth was formed.