A stable population of objects co-orbiting with Venus was recently hypothesized in order to explain the existence of Venus’s co-orbital dust ring. We conducted a five days twilight survey for these objects with the Cerro-Tololo Inter-American Observatory 4 m telescope covering about 35 unique square degrees to 21 mag in the r band. Our survey provides the most stringent limit so far on the number of Venus co-orbital asteroids; it was capable of detecting 5% of the entire population of those asteroids brighter than 21 mag. We estimate an upper limit on the number of co-orbital asteroids brighter than 21 mag (approximately 400–900 m in diameter depending on the asteroid albedo) to be ##IMG## [http://ej.iop.org/images/2632-3338/1/2/47/psjabab9fieqn1.gif] {$N={18}_{-14}^{+30}$} . Previous studies estimated the mass of the observed dust ring co-orbiting with Venus to be equivalent to an asteroid with a 2 km diameter ground to dust. Our survey estimates <...

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深入搜索稳定的金星轨道小行星：人口的限制

最近，为了解释金星的同轨道尘埃环的存在，人们提出了一个稳定的与金星共同运行的物体种群。我们使用Cerro-Tololo美洲天文台4 m望远镜对这些天体进行了为期五天的暮光调查，该望远镜在r波段覆盖了约35个独特的平方度至21 mag。我们的调查提供了迄今为止最严格的金星共轨小行星数量限制；它能够检测出亮度超过21 mag的小行星总数的5％。我们估计比21 mag（直径约400-900 m，视小行星反照率而定）明亮的同轨道小行星数上限为## IMG ## [http://ej.iop.org/images /2632-3338/1/2/47/psjabab9fieqn1.gif] {$ N = {18} _ {-14} ^ {+ 30} $}。先前的研究估计，观测到的与金星共同轨道的尘埃环的质量相当于一颗直径2 km的尘埃的小行星。我们的调查估计<...