HD 172051,又名BD-21 5081,SAO 187086、HR 6998,是一顆恆星[1][2],視星等為5.86,位於銀經12.73,銀緯-6.8,其B1900.0坐標為赤經18h 32m 55.6s,赤緯-21° -6.8′ 4″。
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