土卫十五 又稱為「亞特剌斯」(S/1980 S 28, Atlas),是环绕土星 运行的一颗內衛星 。
這顆衛星 半长轴 約為137,670公里 ,繞土星公轉週期 0.6016947883天,與黃道 及土星 赤道 的軌道傾角 為0.003°~0.004°,軌道離心率 0.0012。
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