标题： 给`奥陌陌增加热度 显示英文标题

标题： Turning up the heat on `Oumuamua

摘要： 我们探讨了像`Oumuamua这样的太阳系外小天体与太阳近距离接触时可能学到的知识。 这些接触可能会对`Oumuamua类天体的总体组成和可能的起源产生严格的限制。 我们发现这类天体每30年与太阳碰撞一次，而大约每年有2个天体会穿过水星轨道以内。 我们确定了太阳系外天体轨道的优选取向，并指出了一些具有这些取向的已知太阳系天体。 我们通过一个简单的贝叶斯分析得出结论，即使我们无法判断具体哪一个，大约有一个这类天体是太阳系外起源。 显示英文摘要

摘要： We explore what may be learned by close encounters between extrasolar minor bodies like `Oumuamua and the Sun. These encounters may yield strong constraints on the bulk composition and possible origin of `Oumuamua-like objects. We find that such objects collide with the Sun once every 30 years, while about 2 pass within the orbit of Mercury each year. We identify preferred orientations for the orbits of extrasolar objects and point out known Solar System bodies with these orientations. We conclude using a simple Bayesian analysis that about one of these objects is extrasolar in origin, even if we cannot tell which.