We have searched a 2010 archival data set from the Canada–France–Hawaii Telescope for very small (km-scale) irregular moons of Jupiter in order to constrain the size distribution of these moons down to radii of ∼400m, discovering 52 objects that are moving with Jupiter-like on-sky rates and are nearly certainly irregular moons. The four brightest detections, and seven in total, were all then linked to known Jovian moons. Extrapolating our characterized detections (those down to magnitude m _r =25.7) to the entire retrograde circum-Jovian population, we estimate the population of radius >0.4 km moons to be 600 (within a factor of 2). At the faintest magnitudes, we find a relatively shallow luminosity function of exponential index α=0.290.15, corresponding to a differential diameter power law of index q≃2.5.

我们搜索了来自加拿大-法国-夏威夷望远镜的 2010 年档案数据集，寻找木星的非常小的（公里级）不规则卫星，以将这些卫星的大小分布限制在半径约 400 米的范围内，发现了 52 个物体以类似木星的天空速度移动，几乎可以肯定是不规则的卫星。四个最亮的探测，总共七个，都与已知的木星卫星有关。将我们的特征探测（那些低至m _r = 25.7 的探测）外推到整个逆行环绕木星种群，我们估计半径 > 0.4 km 卫星的种群为 600（在 2 倍以内）。在最微弱的星等处，我们发现指数指数α的相对浅的光度函数 =0.290.15，对应于指数q ≃2.5的微分直径幂律。