转轴倾角
转轴倾角是行星个自转轴相对于轨道平面个倾斜角度，阿称为倾角（obliquity）或轴交角（axial inclination），勒天文学，是以自转轴搭穿过行星个中心点并垂直勒轨道平面个直线之间所夹个角度来表示搭度量。
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