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Nu Piscium
Star in the constellation Pisces From Wikipedia, the free encyclopedia
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Nu Piscium (ν Piscium) is an orange-hued binary star[7] system in the zodiac constellation of Pisces. Prior to the formation of the modern constellation boundaries in 1930, it was designated 51 Ceti in the Cetus constellation.[8] Nu Piscium is visible to the naked eye, having a combined apparent visual magnitude of 4.44.[3] Based upon an annual parallax shift of 8.98 mas as seen from Earth,[2] it is located about 365 light years from the Sun.
The primary, component A, is an evolved, K-type giant star with a stellar classification of K3 IIIb.[3] It is a weak barium star, indicating that the atmosphere was previously enriched by accretion of s-process elements from what is now a white dwarf companion.[9] The giant has 1.66[3] times the mass of the Sun and has expanded to about 35[4] times the Sun's radius. It is about 3.4 billion years old and is radiating 380 times the Sun's luminosity from its photosphere at an effective temperature of 4,154 K.[3]
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Naming
In Chinese, 外屏 (Wài Píng), meaning Outer Fence, refers to an asterism consisting of ν Piscium, δ Piscium, ε Piscium, ζ Piscium, μ Piscium, ξ Piscium and α Piscium. Consequently, the Chinese name for ν Piscium itself is 外屏五 (Wài Píng wu, English: the Fifth Star of Outer Fence.)[10]
References
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