论文标题
极端跨纳普尼亚物体（541132）Leleākūhonua的单调恒星掩星
A Single-chord Stellar Occultation by the Extreme Trans-Neptunian Object (541132) Leleākūhonua
论文作者
论文摘要
Lucky Star Project预测了极端大型大型透射式北极式物体（541132）Leleākūhonua（也以2015年TG387的临时指定为名），并由Lucky Star Project预测，并在2018年10月20日UT上观察到了研究和教育协作网络。单个检测和附近的非检测提供了尺寸和反照率的限制。当假定圆形轮廓时，半径为$ r = {110} _ { - 10}^{+14} $ km，对应于几何abledo $ {p} _ {p} _ {v} = {0.21} _ {0.21} _ { - 0.05}^{ - 0.05}^{+0.03}^{+0.03} $，其他对象的绝对范围。轨道。掩星还提供了高精度的星体约束。
A stellar occultation by the extreme large-perihelion trans-Neptunian object (541132) Leleākūhonua (also known by the provisional designation of 2015 TG387) was predicted by the Lucky Star project and observed with the Research and Education Collaborative Occultation Network on 2018 October 20 UT. A single detection and a nearby nondetection provide constraints for the size and albedo. When a circular profile is assumed, the radius is $r={110}_{-10}^{+14}$ km, corresponding to a geometric albedo ${p}_{V}={0.21}_{-0.05}^{+0.03}$, for an adopted absolute magnitude of H V = 5.6, typical of other objects in dynamically similar orbits. The occultation also provides a high-precision astrometric constraint.
