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来自维基百科,自由的百科全书
天龍座39,又名BD+58 1809,HD 170073、SAO 30949、HR 6923,是天龍座的一顆恆星[1][2],視星等為4.98,位於銀經87.88,銀緯26.44,其B1900.0坐標為赤經18h 22m 26.9s,赤緯+58° 26.44′ 34″。
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