天鴿座η,又名CD-42 2266,HD 40808、SAO 217650、HR 2120,是天鴿座的一顆恆星[1][2],視星等為3.96,位於銀經249.46,銀緯-27.23,其B1900.0坐標為赤經5h 56m 5.1s,赤緯-42° -27.23′ 14″。
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