RT Conference Proceedings T1 The physical properties of the june bootids and de July 23, 2008 superbolide A1 Konovalova, N. A1 Madiedo Gil, José María A1 Trigo Rodríguez, Josep María AB Many cometary meteoroid streamscrossing the Earth were formed from the continuoussublimation of the ice-rich regions in cometary nuclei[1,2,3]. Another mechanism of producing cometarymeteoroid streams is the catastrophic disruption ofcometary nuclei [4,5,6]. In that case the existence ofcometary meteoroid streams containing meter-sizedmeteoroids capable of producing meteorites afteratmospheric interaction is quite real. Their existencehas important implications because they can benaturally delivering to the Earth different types ofmaterials from comets. Establishing a link betweenmeteorites and their parent bodies is a key issue inplanetary sciences. The Orgueil cometary meteoritewhich has an orbit similar to that of Jupiter-familycomets (JFCs) fell in southern France on May 14,1864 [7]. Despite the very fragile and incoherentnature of the Orgueil stone, the recovered thrity-threestones are now present in several collections aroundthe world. A cometary origin of the Orgueilmeteorite-dropping bolide does not contradictcosmochemistry data on CII chondrites. The fall ofthe Tagish Lake carbonaceous chondrite meteorite onJanuary 18, 2000 was caused by the already knownμ–Orionid fireball stream [8] and also as in case ofthe Orgueil meteorite has a density 1.6 g/cm3. Theinitial fragmentation must have occurred under anaerodynamic pressure of about 0.3 MPa. We presenthere data on a recent superbolide event occurred overTajikistan on July 23, 2008 associated withthe 7P/Pons-Winnecke comet YR 2011 FD 2011 LK http://hdl.handle.net/10272/9419 UL http://hdl.handle.net/10272/9419 LA eng NO Konovalova, N., Madiedo Gil, J.M., Trigo Rodríguez, J.M.: "The physical properties of the june bootids and de July 23, 2008 superbolide". En: 42nd Lunar and Planetary Science Conference (The Woolands, Texas, march 7-11, 2011) DS Repositorio Institucional de la Universidad de Huelva RD 13 jul 2026