八分儀山（Octantis Mons）是火星阿耳古瑞區一座直徑為19.09公里的山丘[1]，其名稱取自古典反照率名，1991年被國際天文聯合會批准批准[2]。
| 坐標 | 54.93°S 318.77°E |
|---|
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