獵戶座U,又名BD+20 1171a,HD 39816、SAO 77730、HR 2063,是獵戶座的一顆恆星[1][2],視星等為5.4,位於銀經188.72,銀緯-2.49,其B1900.0坐標為赤經5h 49m 52.8s,赤緯+20° -2.49′ 29″。
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