Mu Piscis Austrini

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Mu Piscis Austrini
Diagram showing star positions and boundaries of the Piscis Austrinus constellation and its surroundings
Cercle rouge 100%.svg

Location of μ Piscis Austrini (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Piscis Austrinus
Right ascension 22h 08m 22.95s
Declination −32° 59' 18.2"
Apparent magnitude (V) +4.50
Distance 130 ly
(40 pc)
Spectral type A2V
Other designations
μ  Piscis Austrini, μ PsA, Mu PsA, 14 Piscis Austrini, HU PsA, CPD −33° 6221, FK5 832, GC 30954, HD 210049, HIP 109285, HR 8431, PPM 302229, SAO 213576

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.[1]

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.[1]


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.)[2]