Trailing (L5) Neptune Trojans: 2004 KV18 and 2008 LC18
Trailing (L5) Neptune Trojans: 2004 KV18 and 2008 LC18
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尾随 (L5) Neptune Trojans:2004 KV18 和 2008 LC18
DOI:
10.1088/1674-4527/12/11/009
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发表时间:
2012-05
影响因子:
1.8
通讯作者:
黎健
中科院分区:
文献类型:
--
作者:
管璞;周礼勇;黎健
The population of Neptune Trojans is believed to be bigger than that of Jupiter Trojans and that of asteroids in the main belt, although only eight members of this distant asteroid swarm have been observed up to now. Six leading Neptune Trojans around the Lagrange point L4 discovered earlier have been studied in detail, but two trailing ones found recently around the L5 point, 2004 KV18 and 2008 LC18, have not yet been investigated. We report our investigations on the dynamical behaviors of these two new Neptune Trojans. Our calculations show that the asteroid 2004 KV18 is a temporary Neptune Trojan. Most probably, it was captured into the trailing Trojan cloud no earlier than 2.03 × 105 yr ago, and it will not maintain this position later than 1.65 × 105 yr in the future. Based on the statistics from our orbital simulations, we argue that this object is more like a scattered Kuiper belt object. By contrast, the orbit of 2008 LC18 is much more stable. Among the clone orbits spreading within the orbital uncertainties, a considerable portion of clones may survive on the L5 tadpole orbits for 4 Gyr. The strong dependence of the stability on the semimajor axis and resonant angle suggests that further observations are badly required to constrain the orbit in the stable region. We also discuss the implications of the existence and dynamics of these two trailing Trojans over the history of the solar system.
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DOI:
10.1086/505318
发表时间:
2005-10
期刊:
The Astrophysical Journal
影响因子:
--
作者:
K. Goździewski;M. Konacki
通讯作者:
K. Goździewski;M. Konacki
DOI:
10.1111/j.1365-2966.2010.17566.x
发表时间:
2010-07
影响因子:
4.8
作者:
Li-Yong Zhou;R. Dvorak;Yi-Sui Sun Department of Astronomy;N. University;Institute for Astronomy;V. University
通讯作者:
Li-Yong Zhou;R. Dvorak;Yi-Sui Sun Department of Astronomy;N. University;Institute for Astronomy;V. University
影响因子:
56.9
作者:
S. Sheppard;C. Trujillo
通讯作者:
S. Sheppard;C. Trujillo
DOI:
10.1088/0004-6256/137/6/5003
发表时间:
2009-05
期刊:
The Astronomical Journal
影响因子:
--
作者:
D. Nesvorný;D. Vokrouhlický
通讯作者:
D. Nesvorný;D. Vokrouhlický
DOI:
10.1111/j.1365-2966.2010.16441.x
发表时间:
2010-02
影响因子:
4.8
作者:
J. Horner;P. S. Lykawka
通讯作者:
J. Horner;P. S. Lykawka