Orbit and origin of the LL7 chondrite Dishchii'bikoh (Arizona)
文献类型：期刊论文
| 作者 | Jenniskens, Peter1,8; Moskovitz, Nick2; Garvie, Laurence A. J.3; Yin, Qing-Zhu4; Howell, J. Andreas5; Free, Dwayne L.5; Albers, Jim8; Samuels, David8; Fries, Marc D.6; Mane, Prajkta3,6,7 |
| 刊名 | METEORITICS & PLANETARY SCIENCE
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 55期号:3页码:535-557 |
| ISSN号 | 1086-9379 |
| DOI | 10.1111/maps.13452 |
| 英文摘要 | The trajectory and orbit of the LL7 ordinary chondrite Dishchii'bikoh are derived from low-light video observations of a fireball first detected at 10:56:26 UTC on June 2, 2016. Results show a relatively steep ~21 degrees inclined orbit and a short 1.13 AU semimajor axis. Following entry in Earth's atmosphere, the meteor luminosity oscillated corresponding to a meteoroid spin rate of 2.28 +/- 0.02 rotations per second. A large fragment broke off at 44 km altitude. Further down, mass was lost to dust during flares at altitudes of 34, 29, and 25 km. Surviving meteorites were detected by Doppler weather radar and several small 0.9-29 g meteorites were recovered under the radar reflection footprint. Based on cosmogenic radionuclides and ground-based radiometric observations, the Dishchii'bikoh meteoroid was 80 +/- 20 cm in diameter assuming the density was 3.5 g/cm(3). The meteoroid's collisional history confirms that the unusual petrologic class of LL7 does not require a different parent body than three previously observed LL chondrite falls. Dishchii'bikoh was ejected 11 Ma ago from parent body material that has a 4471 +/- 6 Ma U-Pb age, the same as that of Chelyabinsk (4452 +/- 21 Ma). The distribution of the four known pre-impact LL chondrite orbits is best matched by dynamical modeling if the source of LL chondrites is in the inner asteroid belt in a low inclined orbit, with the highly inclined Dishchii'bikoh being the result of interactions with Earth before impacting. |
| WOS关键词 | RAY EXPOSURE AGES ; NOBLE-GASES ; COSMOGENIC NUCLIDES ; SOURCE REGIONS ; METEORITE ; HISTORY ; PB ; CHRONOLOGY ; RECOVERY ; ISOTOPE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000527014600005 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/55835]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Jenniskens, Peter |
| 作者单位 | 1.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA 2.Lowell Observ, 1400 West Mars Hill Rd, Flagstaff, AZ 86001 USA 3.Arizona State Univ, Sch Earth & Space Explorat, Ctr Meteorite Studies, Tempe, AZ 85287 USA 4.Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA 5.SkySentinel LLC SSL, Spalding Allsky Camera Network, Melbourne, FL 32940 USA 6.NASA, Astromat Res & Explorat Sci, Johnson Space Ctr, Houston, TX 77058 USA 7.USRA, Lunar & Planetary Inst, Houston, TX 77058 USA 8.SETI Inst, 189 Bernardo Ave, Mountain View, CA 94043 USA 9.Univ New Mexico, Inst Meteorit, Albuquerque, NM 87131 USA 10.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jenniskens, Peter,Moskovitz, Nick,Garvie, Laurence A. J.,et al. Orbit and origin of the LL7 chondrite Dishchii'bikoh (Arizona)[J]. METEORITICS & PLANETARY SCIENCE,2020,55(3):535-557. |
| APA | Jenniskens, Peter.,Moskovitz, Nick.,Garvie, Laurence A. J..,Yin, Qing-Zhu.,Howell, J. Andreas.,...&Nesvorny, David.(2020).Orbit and origin of the LL7 chondrite Dishchii'bikoh (Arizona).METEORITICS & PLANETARY SCIENCE,55(3),535-557. |
| MLA | Jenniskens, Peter,et al."Orbit and origin of the LL7 chondrite Dishchii'bikoh (Arizona)".METEORITICS & PLANETARY SCIENCE 55.3(2020):535-557. |
入库方式： OAI收割
来源：国家天文台
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