Magnitude 4.5 Apparent magnitude (V) 4.5 | ||
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Mu Piscis Austrini (Mu PsA, μ Piscis Austrini, μ PsA) is a white A-type main sequence star with an apparent magnitude of +4.50. It is approximately 130 light years from Earth.
Mu Piscis Austrini is moving through the Galaxy at a speed of 20 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,800 and 28,500 light years from the center of the Galaxy.
Mu Piscis Austrini came closest to the Sun 1.2 million years ago when it had brightened to magnitude 4.06 from a distance of 111 light years.
Naming
In Chinese, 天錢 (Tiān Qián), meaning Celestial Money, refers to an asterism consisting of refers to an asterism consisting of μ Piscis Austrini, 13 Piscis Austrini, θ Piscis Austrini, ι Piscis Austrini and τ Piscis Austrini. Consequently, μ Piscis Austrini itself is known as 天錢四 (Tiān Qián sì, English: the Fifth Star of Celestial Money.)