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Very precise orbits of 1998 Leonid meteors
Betlem, H; Jenniskens, P; van't Leven, J; ter Kuile, C; Johannink, C; Zhao, HB; Lei, CM; Li, GY; Zhu, J; Evans, S; Spurny, P
AbstractSeventy-five orbits of Leonid meteors obtained during the 1998 outburst are presented. Thirty-eight are precise enough to recognize significant dispersion in orbital elements. Results from the nights of 1998 November 16/17 and 17/18 differ, in agreement with the dominant presence of different dust components. The shower rate profile of 1998 November 16/17 was dominated by a broad component, rich in bright meteors. The radiant distribution is compact. The semimajor axis is confined to values close to that of the parent comet, whereas the distribution of inclination has a central condensation in a narrow range. On the other hand, 1998 November 17/18 was dominated by dust responsible for a more narrow secondary peak in the flux curve. The declination of the radiant and the inclination of the orbit are more widely dispersed. The argument of perihelion, inclination, and the perihelion distance are displaced. These data substantiate the hypothesis that trapping in orbital resonances is important for the dynamical evolution of the broad component.
Subject AreaGeochemistry & Geophysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed ByISTP ; SCI
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000083885000019
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Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.NASA, Ames Res Ctr, SETI Inst, Moffett Field, CA 94035 USA
2.Dutch Meteor Soc, NL-2318 NB Leiden, Netherlands
3.Purple Mt Observ, Nanjing 210008, Peoples R China
4.Chinese Acad Sci, Beijing Astron Observ, Beijing 100080, Peoples R China
5.BAA Meteor Sect, Haverhill CB9 7HY, Suffolk, England
6.Ondrejov Observ, Astron Inst, Ondrejov 25165, Czech Republic
Recommended Citation
GB/T 7714
Betlem, H,Jenniskens, P,van't Leven, J,et al. Very precise orbits of 1998 Leonid meteors[J]. METEORITICS & PLANETARY SCIENCE,1999,34(6):979-986.
APA Betlem, H.,Jenniskens, P.,van't Leven, J.,ter Kuile, C.,Johannink, C.,...&Spurny, P.(1999).Very precise orbits of 1998 Leonid meteors.METEORITICS & PLANETARY SCIENCE,34(6),979-986.
MLA Betlem, H,et al."Very precise orbits of 1998 Leonid meteors".METEORITICS & PLANETARY SCIENCE 34.6(1999):979-986.
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