Abstract

We present the results of our analysis of the optimal flight to the trans-Neptunian object (90377) Sedna at the launch in 2029. Sedna is a distant space object with a perihelion and aphelion \({\sim}74\) and 1000 AU, respectively, suggesting that this celestial body may belong to the Oort cloud. The orbital period of Sedna is more than 11 000 years. In our study we have considered a direct flight to Sedna and a flight with gravity assists of Venus, the Earth, and Jupiter under a restriction on the flight duration and the total \(\Delta V\). As the main scenario for the flight to Sedna for the launch in 2029 we have chosen the Earth–Venus–Earth–Earth–Jupiter flight, which provides \(\Delta V\) cost no more than 4.64 km s\({}^{-1}\) under flight time restrictions of 30 years. We have also investigated the possibility of extending the scenario for the flight to Sedna by including a close flyby of one or more asteroids. As an example, we consider in detail the scenario with the flyby of the main-belt asteroids (20) Massalia and (5080) Oya.

中文翻译：

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对海王星外天体 (90377) Sedna 最佳飞行轨迹的分析

摘要

我们在 2029 年的发射中展示了我们对跨海王星物体 (90377) Sedna 的最佳飞行的分析结果。 Sedna 是一个遥远的空间物体，具有近日点和远日点\({\sim}74\)和 1000 AU ，分别表明这个天体可能属于奥尔特云。Sedna 的轨道周期超过 11 000 年。在我们的研究中，我们考虑了直飞赛德娜的航班，以及在飞行持续时间和总\(\Delta V\)的限制下使用金星、地球和木星重力辅助的飞行。作为 2029 年发射到 Sedna 的飞行的主要场景，我们选择了地球-金星-地球-地球-木星飞行，它提供\(\Delta V\)成本不超过 4.64 km s \({}^ {-1}\)在 30 年的飞行时间限制下。我们还研究了通过包括一颗或多颗小行星的近距离飞越来扩展飞往 Sedna 的场景的可能性。例如，我们详细考虑了主带小行星 (20) Massalia 和 (5080) Oya 飞越的情景。