HD 2475,又名BD-21 57,SAO 166296、HR 108,是一颗恒星[1][2],视星等为6.43,位于银经83.87,银纬-81.4,其B1900.0坐标为赤经0h 23m 20.2s,赤纬-20° -81.4′ 7″。
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