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arXiv 1503.07546astro-ph.EP
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三重星系2001的稳定逆行轨道SN263

Stable retrograde orbits around the triple system 2001 SN263

R. A. N. Araujo, O. C. Winter, A. F. B. A. Prado

摘要:

NEA 2001 SN 263是ASTER任务的目标-巴西第一次深空任务。Araujo等人(2012年)描述了平面和平面情况下三元系组件周围的稳定区域。知道逆行轨道预计会更稳定,在这里我们提出了一个补充研究。我们现在考虑在内部和外部区域中围绕系统组件运行的粒子,其相对倾角在$90^{\circ}< I \leqslant180^{\circ}$之间,即,逆行轨道的粒子我们的目标是描述逆行轨道系统的稳定区域,然后分离出一个首选区域来放置空间探测器。对于一个太空任务来说,最有趣的区域是那些在逆时针情况下不稳定,但在逆行情况下稳定的区域。这种配置提供了一个稳定的区域,使飞行任务探测器处于相对逆行的轨道,同时,由于预计它们将具有逆行轨道,因此保证了一个没有碎片的区域。我们发现,事实上,内部和外部的稳定区域显着增加时相比,Escherde的情况。对于具有$e=0$和$I=180^{\circ}$的粒子,我们发现α和β周围的几乎整个区域保持稳定。然后,我们确定了三个内部区域和一个外部区域,这些区域对于放置太空探测器非常有趣。我们提出的稳定区域发现逆行的情况下,这些首选区域的讨论。我们还讨论了与β和γ粒子的共振的影响,以及在这种情况下的Kozai机制的作用。这些结果有助于我们理解和表征三重系统2001 SN 263在考虑逆行轨道时的稳定性,并为ASTER任务的设计提供重要参数。

英文摘要:

The NEA 2001 SN263 is the target of the ASTER MISSION - First Brazilian Deep Space Mission. Araujo et al. (2012), characterized the stable regions around the components of the triple system for the planar and prograde cases. Knowing that the retrograde orbits are expected to be more stable, here we present a complementary study. We now considered particles orbiting the components of the system, in the internal and external regions, with relative inclinations between $90^{\circ}< I \leqslant180^{\circ}$, i.e., particles with retrograde orbits. Our goal is to characterize the stable regions of the system for retrograde orbits, and then detach a preferred region to place the space probe. For a space mission, the most interesting regions would be those that are unstable for the prograde cases, but stable for the retrograde cases. Such configuration provide a stable region to place the mission probe with a relative retrograde orbit, and, at the same time, guarantees a region free of debris since they are expected to have prograde orbits. We found that in fact the internal and external stable regions significantly increase when compared to the prograde case. For particles with $e=0$ and $I=180^{\circ}$, we found that nearly the whole region around Alpha and Beta remain stable. We then identified three internal regions and one external region that are very interesting to place the space probe. We present the stable regions found for the retrograde case and a discussion on those preferred regions. We also discuss the effects of resonances of the particles with Beta and Gamma, and the role of the Kozai mechanism in this scenario. These results help us understand and characterize the stability of the triple system 2001 SN263 when retrograde orbits are considered, and provide important parameters to the design of the ASTER mission.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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