英仙座τ,又名BD+52 641,HD 17878、SAO 23685、HR 854,是英仙座的一颗恒星[1][2],视星等为3.95,位于银经141.02,银纬-5.74,其B1900.0坐标为赤经2h 47m 9.8s,赤纬+52° -5.74′ 12″。
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