Near-Earth asteroids among the Scorpiids meteoroid complex

Near-Earth asteroids among the Scorpiids meteoroid complex
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天蝎座流星体群中的近地小行星

DOI:
10.1051/0004-6361/201219828
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发表时间:
2013
影响因子:
6.5
通讯作者:
Babadzhanov P
Babadzhanov P
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Babadzhanov P

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通过搜索“近地天体动态网站”数据库,查明了一组近地小行星,它们的轨道彼此相似,轨道可被归类为彗星。发现了6颗小行星,分别是2003 HP 2、2006 WX 29、2007 VH 189、2007 WT 3、2007 WY 3和2008 UM 1。在近日点变角的一个完整周期内,轨道被整合回来,以确定节点距离为1 Au的时间。理论上,假定流星体是在这些时间释放的,其轨道与近地小行星的轨道相同。计算出了这些流星体撞击地球大气层时会形成的流星雨的特征。发现6个近地小行星产生的流星雨是一致的,可以被认为是夜间的χ-和δ-天蝎座流星雨以及白天的β-和σ-天秤座流星雨,后两者是我们命名的。还发现,天蝎座小行星的轨道演变与六个近地小行星的轨道演变几乎相同。轨道的相似性,彗星轨道的性质和天蝎座流星体流的关联使我们认为,整个复杂的起源是几千年前一些未知彗星的碎片。
A group of near-Earth asteroids (NEAs) that moved on similar orbits to each other and where the orbits could be classed as cometary were identified by searching the “Near-Earth Objects Dynamic Site” database. Six NEAs were identified, 2003HP2, 2006WX29, 2007VH189, 2007WT3, 2007WY3, and 2008UM1. The orbits were integrated back over one complete cycle in the variation of the argument of perihelion to identify times when their nodal distance was 1 AU. Theoretical meteoroids were assumed to have been released at these times on an orbit identical to those of the NEAs. The characteristics of a meteor shower that would be formed when these meteoroids hit the Earth’s atmosphere were calculated. It was found that the showers produced from all six NEAs were identical and could be recognized as the nighttimeχ- andδ-Scorpiids and the daytimeβ- andσ-Librids, the latter two being named by us. It was also found that the orbital evolution of the Scorpiids was almost identical to the orbital evolution of the six NEAs. The similarity of the orbits, the nature of the orbit as cometary and the association of the Scorpiid meteoroid stream lead us to suggest that the origin of the whole complex was the fragmentation of some unknown comet several millennia ago.
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DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
J. Trigo;J. Madiedo;I. Williams;A. Castro‐Tirado;J. Llorca;S. Vítek;M. Jelínek
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近地天体 2004CK39 及其相关流星雨
DOI: --
发表时间: 2012
期刊:
影响因子: --
作者:
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通讯作者: G. Kokhirova
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DOI: --
发表时间: 2003
期刊:
影响因子: --
作者:
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2003 EH1 是象限流星雨母彗星
DOI: --
发表时间: 2004
期刊:
影响因子: --
作者:
P. Jenniskens
通讯作者: P. Jenniskens
阿德莱德雷达轨道勘测中识别来自阿波罗小行星的流星体流
DOI: --
发表时间: 1988
期刊:
影响因子: --
作者:
D. Olsson
通讯作者: D. Olsson