Radar observations of the Maribo fireball over Juliusruh: revised trajectory and meteoroid mass estimation
Radar observations of the Maribo fireball over Juliusruh: revised trajectory and meteoroid mass estimation
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Juliusruh 上空马里博火球的雷达观测:修正的轨迹和流星体质量估计
DOI:
10.1093/mnras/stv614
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发表时间:
2015
影响因子:
4.8
通讯作者:
W. Singer
中科院分区:
文献类型:
--
作者:
C. Schult;G. Stober;D. Keuer;W. Singer
On 2009 January17, a bright fireball occurred above the Baltic Sea. Some weeks later, a chondritic meteorite was found near the Danish town Maribo. A 32.5-MHz all-sky meteor radar recorded the fall of the meteoroid, providing a unique data set for the reconstruction of the meteor trajectory and the mass ablation of the meteoroid. We present a new detailed analysis of the data from a 32.5-MHz radar. From our orbital analysis, we determine that the entry velocity wasv= 28.54 ± 0.46 km s−1, which is slightly faster than in previous calculations. Furthermore, the use of an extended single-body ablation model of the atmospheric flight leads to the estimation of an entry mass of about 250 kg.
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