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Delta Piscis Austrini : ウィキペディア英語版 | Delta Piscis Austrini
Delta Piscis Austrini (Delta PsA, δ Piscis Austrini, δ PsA) is multiple star system in constellation of Piscis Austrinus, with an apparent magnitude of +4.20. The primary component is a yellow G-type giant. It is approximately 170 light years from Earth. Delta Piscis Austrini is moving through the Galaxy at a speed of 13.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,000 and 35,300 light years from the center of the Galaxy.〔(Delta Piscis Austrini (HIP 113246) )〕 Delta Piscis Austrini will come closest to the Sun 2.8 million years from now when it will brighten to magnitude 2.87 from a distance of 83 light years.〔 ==Chinese name== The Chinese name for Delta Piscis Austrini is () meaning ''Materials for Making Tents'', because this star is marking itself and stand alone in ''Materials for Making Tents'' asterism, Well mansion (see : Chinese constellation).〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 6 日 )〕 天綱 (Tiān Gāng) westernized into Tien Kang, meaning "the Heavenly Rope" in R.H. Allen's work, but the name is for the asterism consisting this star, β PsA and ζ PsA.〔(Richard Hinckley Allen: Star Names — Their Lore and Meaning: Piscis Australis, the Southern Fish )〕
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