Počet záznamů: 1
The Žďár nad Sázavou meteorite fall: Fireball trajectory, photometry, dynamics, fragmentation, orbit, and meteorite recovery
- 1.0534659 - ASÚ 2021 RIV US eng J - Článek v odborném periodiku
Spurný, Pavel - Borovička, Jiří - Shrbený, Lukáš
The Žďár nad Sázavou meteorite fall: Fireball trajectory, photometry, dynamics, fragmentation, orbit, and meteorite recovery.
Meteoritics & Planetary Science. Roč. 55, č. 2 (2020), s. 376-401. ISSN 1086-9379. E-ISSN 1945-5100
Grant CEP: GA ČR(CZ) GA16-00761S
Grant ostatní: AV ČR(CZ) AP1202
Program: Akademická prémie - Praemium Academiae
Institucionální podpora: RVO:67985815
Klíčová slova: fireballs * meteorites * fragmentation
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 2.487, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1111/maps.13444
We report a comprehensive analysis of the instrumentally observed meteorite fall Žďár nad Sazavou, which occurred in the Czech Republic on December 9, 2014, at 16:16:45-54 UT. The original meteoroid with an estimated initial mass of 150 kg entered the atmosphere with a speed of 21.89 km s(-1) and began a luminous trajectory at an altitude of 98.06 km. At the maximum, it reached -15.26 absolute magnitude and terminated after a 9.16 s and 170.5 km long flight at an altitude of 24.71 km with a speed of 4.8 km/s. The average slope of the atmospheric trajectory to the Earth's surface was only 25.66 degrees. Before its collision with Earth, the initial meteoroid orbited the Sun on a moderately eccentric orbit with perihelion near Venus orbit, aphelion in the outer main belt, and low inclination. During the atmospheric entry, the meteoroid severely fragmented at a very low dynamic pressure 0.016 MPa and further multiple fragmentations occurred at 1.4-2.5 MPa. Based on our analysis, so far three small meteorites classified as L3.9 ordinary chondrites totaling 87 g have been found almost exactly in the locations predicted for a given mass. Because of very high quality of photographic and radiometric records, taken by the dedicated instruments of the Czech part of the European Fireball Network, Žďár nad Sazavou belongs to the most reliably, accurately, and thoroughly described meteorite falls in history.
Trvalý link: http://hdl.handle.net/11104/0312831
Počet záznamů: 1