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来自维基百科,自由的百科全书
上宰(天龍座θ)也稱紫微左垣二,又名BD+58 1608,HD 144284、SAO 29765、HR 5986,是天龍座的一顆恆星[1][2],視星等為4.01,位於銀經90.18,銀緯44.58,其B1900.0坐標為赤經16h 0m 0.8s,赤緯+58° 44.58′ 56″。
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