Xi Piscium

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Xi Piscium
Diagram showing star positions and boundaries of the Pisces constellation and its surroundings
Cercle rouge 100%.svg

Location of ξ Piscium(circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Pisces
Right ascension 01h 53m 33.34s
Declination +03° 11′ 14.9″
Apparent magnitude (V) 4.61
Distance 191 ly
(59 pc)
Spectral type K0III SB
Other designations
ξ Piscium, ξ Psc, Xi Psc, 111 Piscium, BD+02 290, FK5 65, HD 11559, HIP 8833, HR 549, PPM 145091, SAO 110206, WDS J02020+0246AB.[1]

Xi Piscium (Xi Psc, ξ Piscium, ξ Psc) is a spectroscopic binary star system[2] in the constellation of Pisces, with an apparent magnitude of +4.61. The primary component is an orange K-type giant. It is approximately 191 light years from Earth.

Xi Piscium is moving through the Galaxy at a speed of 30.7 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,100 and 39,700 light years from the center of the Galaxy.[3]

Xi Piscium came closest to the Sun 1.8 million years ago when it had brightened to magnitude 1.77 from a distance of 51 light years.[3]

Naming[edit]

In Chinese, 外屏 (Wài Píng), meaning Outer Fence, refers to an asterism consisting of refers to an asterism consisting of ξ Piscium, δ Piscium, ε Piscium, ζ Piscium, μ Piscium, ν Piscium and α Piscium. Consequently, ξ Piscium itself is known as 外屏六 (Wài Píng liù, English: the Sixth Star of Outer Fence.)[4]

References[edit]