后发座9,又名BD+28 2106,HD 107213、SAO 82244、HR 4688,是后发座的一颗恒星[1][2],视星等为6.33,位于银经202.8,银纬82.85,其B1900.0坐标为赤经12h 14m 29s,赤纬+28° 82.85′ 56″。
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