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Delta Sagittae : ウィキペディア英語版 | Delta Sagittae
Delta Sagittae (Delta Sge, δ Sagittae, δ Sge) is a multiple star system in the constellation of Sagitta, with an apparent magnitude of +3.68. The primary component is a red M-type bright giant. It is approximately 448 light years from Earth. Delta Sagittae is moving through the Galaxy at a speed of 9.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,800 and 35,300 light years from the center of the Galaxy.〔(Delta Sagittae (HIP 97365) )〕 ==Naming== In Chinese, (), meaning ''Left Flag'', refers to an asterism consisting of δ Sagittae, α Sagittae, β Sagittae, ζ Sagittae, γ Sagittae, 13 Sagittae, 11 Sagittae, 14 Sagittae and ρ Aquilae. Consequently, δ Sagittae itself is known as (, (英語:the Third Star of Left Flag).)〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 3 日 )〕
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