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来自维基百科,自由的百科全书
HD 121504 b是一顆質量稍低於木星的太陽系外行星。雖然徑向速度法只能量測出該行星的質量下限,其真實質量可能更高[1]。
HD 121504 b 距離母恆星 HD 121504 約日地距離的三分之一,軌道是橢圓形。
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