AI 中文总结
本文研究柯伊伯带天体2001 XR$_{254}$的旋转与物理性质，模拟其2031-2040年的互食事件季，该潜在三星系统的观测将助力柯伊伯带形成研究。
AI 中文摘要
(524366) 2001 XR$_{254}$是一颗动力学冷经典柯伊伯带天体，为尺寸近乎相等的宽距双星，其即将到来的互食事件季使其成为物理表征的极具价值目标。在互食事件发生前，我们于2021至2026年利用洛厄尔发现望远镜开展了地基测光观测活动，旨在研究该系统的旋转与物理性质、修正其未来互食事件的预测，同时提供可作为基线识别叠加旋转的食事件的光变曲线。我们得到了双峰值非对称旋转光变曲线，周期为11.17±0.04小时，光变曲线振幅为0.42±0.04星等；该光变曲线呈现尖锐的V形极小值，与主天体为密近/相接双星的特征相符，可能使该系统成为三星系统。利用开普勒互轨道解，我们模拟了预计在约2031至约2040年发生的即将到来的互事件季，并给出了未来观测活动的若干单个事件。2001 XR$_{254}$是少数拥有明确互轨道且即将观测到互食事件季的宽距柯伊伯带双星系统之一，对这一潜在三星系统的互事件观测将提供提升组分尺寸、形状、密度及表面性质的罕见机会，为柯伊伯带的形成提供见解。
英文摘要
(524366) 2001 XR$_{254}$ is a dynamically Cold Classical Kuiper Belt Object that is a nearly equal-sized wide binary whose upcoming mutual events season makes it a particularly valuable target for physical characterization. In advance of the mutual eclipse events, we conducted a ground-based photometric observing campaign between 2021 and 2026 using the \textit{Lowell Discovery Telescope} to investigate the rotational and physical properties of the system, to refine predictions for its future mutual events, as well as provide a lightcurve we can use as a baseline to identify eclipse events superimposed with the rotation. We derive a double-peaked asymmetric rotational lightcurve with a period of 11.17$\pm$0.04 h and a lightcurve amplitude of 0.42$\pm$0.04 mag. The lightcurve presents a sharp V-shaped minimum consistent with the primary being a close/contact binary, possibly making this a triple system. Using the Keplerian mutual orbit solution, we model the upcoming mutual event season expected between $\sim$2031 and $\sim$2040 and present some individual events for future campaigns. 2001 XR$_{254}$ is one of the few wide binary Kuiper belt systems with a well-determined mutual orbit and a soon observable mutual eclipse event season. Mutual event observations of this possible triple system will provide a rare opportunity to improve component sizes, shapes, densities, and surface properties, offering insights into the formation of the Kuiper Belt.
CommentsAJ, In press
