Pi Piscium

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Pi Piscium[1]
Diagram showing star positions and boundaries of the Pisces constellation and its surroundings
Cercle rouge 100%.svg

Location of π Piscium(circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Pisces
Right ascension 01h 37m 05.9167s
Declination +12° 08' 29.525"
Apparent magnitude (V) 5.551
Spectral type F0V
U−B color index +0.032
B−V color index +0.353
Radial velocity (Rv) -1 km/s
Proper motion (μ) RA: -74.90 mas/yr
Dec.: 9.96 mas/yr
Parallax (π) 29.58 ± 1.42 mas
Distance 110 ± 5 ly
(34 ± 2 pc)
Other designations
π Piscium, π Psc, Pi Psc, 102 Piscium, BD+11°205, FK5 1046, GC 1954, HD 9919, HIP 7535, HR 463, PPM 117498, SAO 92536

Pi Piscium (Pi Psc, π Piscium, π Psc) is a star approximately 110 light years away from Earth, in the constellation Pisces. It is a yellowish white star of the spectral type F0V, meaning it possesses a surface temperature of 6,000 to 7,500 kelvins, and is approximately the same size as the Sun, yet brighter and hotter in surface temperature. It has a rotational velocity of about 96 kilometers per second at its equator.[2] It is a variable star.[1]


In Chinese, 右更 (Yòu Gèng), meaning Official in Charge of the Pasturing, refers to an asterism consisting of refers to an asterism consisting of π Piscium, η Piscium, ρ Piscium, ο Piscium and 104 Piscium. Consequently, π Piscium itself is known as 右更三 (Yòu Gèng sān, English: the Third Star of Official in Charge of the Pasturing.)[3]