大犬座GY,又名CD-27 3789,HD 55857、SAO 173244、HR 2734,是大犬座的一颗恒星[1][2],视星等为6.12,位于银经239.81,银纬-7.65,其B1900.0坐标为赤经7h 9m 34.7s,赤纬-27° -7.65′ 7″。
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