asteroidal

1. The thin film was composed of plentiful asteroidal crystal which crystal dimension approximate to 70~ 100nm.
   表面均匀、致密，薄膜材料由许多星状晶粒组成，晶粒尺寸大约为70～100nm左右，10层膜厚度约为1μm；
2. Research on mean perturbation of asteroidal orbit from Jupiter
   小行星轨道受木星的平均摄动研究

adj

1. of or relating to or resembling an asteroid