论文标题
迁移爆发准希尔达对象282p/（323137）2003 BM80
Migratory Outbursting Quasi-Hilda Object 282P/(323137) 2003 BM80
论文作者
论文摘要
我们报告对象282p/（323137）2003 BM80正在进行持续的活动爆发，持续了15个月以上。这些发现部分源于我们的NASA合作伙伴公民科学项目活跃的小行星（http://activeasteroids.net），我们在此处介绍。我们通过观察运动（梵蒂冈先进的技术望远镜，洛厄尔发现望远镜和双子座南望远镜）获得了282P的新观察结果，确认282p在6月7日在UT 2022上活跃，2021年3月3日后的大约15个月在2021/2022年的2021/2022 epoch中显示了活动。我们将282p分类为准希尔达对象的成员，这是在轨道区域中发现的一组动态不稳定的对象，类似于其动态特征，但在其动态特征上与Hilda小行星（Hilda小行星（对象）在3：2中与木星共鸣）。我们的动态模拟显示，在过去的180年中，282p与木星至少发生了五次与木星的亲密接触。 282p很可能是250年前的Centaur或Jupiter Family Comet（JFC）。在350年的时间里，经过约15种强大的Jovian相互作用，282p很可能会迁移到肯尼迪州，或者不太可能是主要皮带小行星。这些迁移突出了一种动态途径，将半人马和jfc与准希尔达斯连接起来，并可能是活跃的小行星。通过我们的热力学建模和新的活动观测来综合这些结果，我们发现挥发性升华是主要的活性机制。我们预计将在2023年进行的静态282p的观察将有助于通过测量旋转期和确定光谱类型来确认我们的假设。
We report object 282P/(323137) 2003 BM80 is undergoing a sustained activity outburst, lasting over 15 months thus far. These findings stem in part from our NASA Partner Citizen Science project Active Asteroids (http://activeasteroids.net), which we introduce here. We acquired new observations of 282P via our observing campaign (Vatican Advanced Technology Telescope, Lowell Discovery Telescope, and the Gemini South telescope), confirming 282P was active on UT 2022 June 7, some 15 months after 2021 March images showed activity in the 2021/2022 epoch. We classify 282P as a member of the Quasi-Hilda Objects, a group of dynamically unstable objects found in an orbital region similar to, but distinct in their dynamical characteristics to, the Hilda asteroids (objects in 3:2 resonance with Jupiter). Our dynamical simulations show 282P has undergone at least five close encounters with Jupiter and one with Saturn over the last 180 years. 282P was most likely a Centaur or Jupiter Family Comet (JFC) 250 years ago. In 350 years, following some 15 strong Jovian interactions, 282P will most likely migrate to become a JFC or, less likely, a main-belt asteroid. These migrations highlight a dynamical pathway connecting Centaurs and JFC with Quasi-Hildas and, potentially, active asteroids. Synthesizing these results with our thermodynamical modeling and new activity observations, we find volatile sublimation is the primary activity mechanism. Observations of a quiescent 282P, which we anticipate will be possible in 2023, will help confirm our hypothesis by measuring a rotation period and ascertaining spectral type.
