Iota Piscis Austrini, also named Baijiu, is a solitary, blue-white hued star in the southern constellation of Piscis Austrinus. It has an apparent visual magnitude of +4.35 and is around 500 light years from the Sun. This is an A-type main sequence star with a stellar classification of A0 V. It has a magnitude 11.4 visual companion located at an angular separation of 20 arc seconds along a position angle of 290°, as of 1910.
Iota Piscis Austrini is moving through the Galaxy at a speed of 29.7 km/s relative to the Sun. Its projected Galactic orbit carries it between 18,400 and 24,300 light years from the center of the Galaxy.
Naming In Chinese astronomy, (), meaning Celestial Money, refers to an asterism consisting of ι Piscis Austrini, 13 Piscis Austrini, θ Piscis Austrini, μ Piscis Austrini and τ Piscis Austrini. Consequently, the Chinese name for ι Piscis Austrini itself is (, .) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 5 日 However, many of the Chinese constellations have changed over time, and ι Piscis Austrini was originally part of Bài Jiù (Broken Mortar, ). The IAU Working Group on Star Names approved the name Baijiu for this star on 17 September 2026.
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