Iota Piscium


Iota Piscium is a star located in the constellation Pisces. With an apparent magnitude of +4.13, it is visible to the naked eye. Parallax measurements give a distance of 44.73 light-years.
Its spectral type is F7V, with the luminosity class V suggesting it is in the main sequence, fusing atoms of hydrogen into helium. The star has 1.15 times the Sun's mass and 1.60 times the Sun's radius. It is radiating 3.6 times the Sun's luminosity at an effective temperature of. It is a suspected variable star.
The star was once thought to have one or two stellar companions, but both are line-of-sight coincidences. However, it has a candidate proper motion companion with a separation of 8.48". It displays a far-infrared excess at a wavelength of 70μm, suggesting it is being orbited by a cold debris disk.

Naming

In Chinese, 霹靂, meaning Thunderbolt, refers to an asterism consisting of ι Piscium, β Piscium, γ Piscium, θ Piscium, and ω Piscium. Consequently, the Chinese name for ι Piscium itself is 霹靂四