Gamma Piscium

γ Piscium

Template:Location mark Location of γ Piscium (circled)
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Pisces
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	3.699
Characteristics
Evolutionary stage	Horizontal branch
Spectral type	G8 III
U−B Template:Engvar	+0.572
B−V Template:Engvar	+0.924
Astrometry
Radial velocity (Rv)	−13.6 km/s
Proper motion (μ)	RA: 759.268 mas/yr Dec.: 17.568 mas/yr
Parallax (π)	24.1958±0.2967 mas
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	0.68±0.08
Details
Mass	0.97±0.12 Template:Solar mass
Radius	Template:Solar radius
Luminosity	Template:Solar luminosity
Surface gravity (log g)	2.43 ± 0.06 cgs
Temperature	K
Metallicity [Fe/H]	−0.51 dex
Age	~12 Gyr
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
Template:Odlist
Database references
SIMBAD	data

Gamma Piscium (γ Piscium) is a star approximately 135 light years away from Earth in the zodiac constellation of Pisces. It is a yellow star with a spectral type of G8 III, meaning it has a surface temperature of 4,833 K and is a giant star. It is slightly cooler than the Sun, yet it is 11 solar radii in size and shines with the light of 63 Suns. The star is a member of the red clump, which means it is undergoing core helium fusion. At an apparent magnitude of 3.7, it is the second brightest star in the constellation Pisces, between Eta and Alpha.

Gamma Piscium moves across the sky at three-quarters of an arcsecond per year, which at 135 light years corresponds to 153 kilometers per second. This suggests it is a visitor from another part of the Milky Way Galaxy; in astronomical terms, it will quickly leave the vicinity of the Sun. Its metallicity is only one-fourth that of the Sun, and visitors from outside the thin disk that composes the Milky Way tend to be metal-poor. Gamma Piscium is part of the asterism known as the "circlet of Pisces."

Naming

In Chinese, (), meaning Thunderbolt, refers to an asterism consisting of γ Piscium, β Piscium, θ Piscium, ι Piscium and ω Piscium. Consequently, the Chinese name for γ Piscium itself is (, Template:Langx.)

Planetary system

In 2021, a gas giant planet was detected by the radial velocity method.

|}