论文标题
2021 PH27是在金星上可检测到的流星淋浴的活跃小行星吗？
Is 2021 PH27 an active asteroid with a meteor shower detectable on Venus?
论文作者
论文摘要
最近发现的近地小行星2021 PH27的轨道周期最短。不能排除2021 PH27也是活跃的小行星，如（3200）Phaethon。我们打算估计该假设的后果，尽管由于太阳伸长率较低，因此在围栏通道期间的基于地面观察结果很难进行测试。假设表面活性与Phaethon相似，则可以估计亮度的增加约为1.4 mag。由于它是一个小行星，带有$ 0.014660 \ pm的甲固醇为0.000034 $ au，带有金星，2021 ph27可能等同于菲森（Phaethon）的地球，并且是维纳斯流星淋浴的祖体体。观察金星大气层假设火球的一个好机会将在2023年6月7日左右发生，当时金星将以距2021 PH27的名义轨道的最小距离通过。另一个有利的日期将是2026年7月。最后，在2022年3月28日，小行星还将处于最大的阳光伸长率，约为$ 52.3^{\ circ} $，并且在其轨道上，是最有利的配置，这是从物理观点中以光度，极性，极性观测来表征它的最有利的配置。
The recently discovered near-Earth asteroid 2021 PH27 has the shortest orbital period of all known asteroids. It cannot be excluded that 2021 PH27 is also an active asteroid, as (3200) Phaethon. We intend to estimate the consequences of this hypothesis, although testing is difficult with ground-based observations during perihelion passages, due to low solar elongation. Assuming a surface activity similar to that of Phaethon, an increase in brightness of about 1.4 mag can be estimated. Since it is an asteroid with a MOID of $0.014660 \pm 0.000034$ AU with Venus, 2021 PH27 could be the equivalent of Phaethon for the Earth and be the progenitor body of a venusian meteor shower. A good opportunity to observe the hypothetical fireballs in Venus's atmosphere will take place on the days around Jun 07, 2023, when Venus will pass at the minimum distance from the nominal orbit of 2021 PH27. Another favorable date will be Jul 05, 2026. Finally, on Mar 28, 2022 the asteroid will also be at the maximum Sun elongation of about $52.3^{\circ}$ and at the aphelion of its orbit, the most favorable configuration to characterize it from the physical point of view with photometric, polarimetric and spectroscopic observations.
