長蛇座η,又名BD+03 2039,HD 74280、SAO 117050、HR 3454,是長蛇座的一顆恆星[1][2],視星等為4.3,位於銀經223.25,銀緯26.32,其B1900.0坐標為赤經8h 37m 59.8s,赤緯+3° 26.32′ 28″。
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