论文标题
P/2019 LD2（Atlas）的瞬态木星木工样轨道
The Transient Jupiter Trojan-Like Orbit of P/2019 LD2 (ATLAS)
论文作者
论文摘要
彗星P/2019 LD2目前具有类似于木星特洛伊木马的轨道元素，因此表面上似乎代表了首次研究该人群成员的挥发性含量和主动行为的独特机会。然而，数值集成显示，它以前是半人马座，然后在2018年7月达到了当前的木星特洛伊木马样轨道，预计将于2月2028年重返半人马座，然后最终在2月2063年成为木星 - 家庭彗星。 P/2019 LD2的情况强调了需要快速，可靠地动态地对在当前和即将进行的广阔田野调查中发现的小太阳系物体进行动态分类的必要性。
Comet P/2019 LD2 has orbital elements currently resembling those of a Jupiter Trojan, and therefore superficially appears to represent a unique opportunity to study the volatile content and active behavior of a member of this population for the first time. However, numerical integrations show that it was previously a Centaur before reaching its current Jupiter Trojan-like orbit in 2018 July, and is expected to return to being a Centaur in 2028 February, before eventually becoming a Jupiter-family comet in 2063 February. The case of P/2019 LD2 highlights the need for mechanisms to quickly and reliably dynamically classify small solar system bodies discovered in current and upcoming wide-field surveys.
