标题： 与天王星处于外共振的小行星 显示英文标题

标题： A minor planet in an outer resonance with Uranus

摘要： 我们找到了对半人马小行星2015 OU$_{194}$在2017和2018年的档案观测数据，这些数据将其数据弧长度从1.0年扩展到了3.5年。我们表明它处于海王星的外侧$3:4$均值运动共振中，此后称为U$_{3/4}$。该共振至少在过去的1000千年到未来的500千年内都是稳定的。我们在文献中没有发现有关该共振中已知天体的记载，或在海王星和冥王星轨道之间的任何其他共振中的天体。寻找其他候选天体时，我们发现2013 RG$_{98}$在当前时代附近几百年内也停留在U$_{3/4}$中。第三个候选天体2014 NX$_{65}$受到海王星的强烈影响。 显示英文摘要

摘要： We have located archival observations of the centaur 2015 OU$_{194}$ from 2017 and 2018, which extend its data-arc length from 1.0 to 3.5 years. We show that it is in an outer $3:4$ mean motion resonance with Uranus, henceforth referred to as U$_{3/4}$. The resonance is stable from at least 1000 kyrs in the past till 500 kyrs in the future. We find no mention in the literature of known objects in this resonance, or in any other resonance between the orbits of Uranus and Neptune. Looking for additional candidates, we find that 2013 RG$_{98}$ also stays in U$_{3/4}$ for several hundred kyrs around the present epoch. A third candidate, 2014 NX$_{65}$, is strongly influenced by Neptune.