Star Gamma Cephei B
Red dwarf Gamma Cephei B is located 45 light years away from the Sun.
It is a single star of spectral class M4V, that has 33 % of solar mass.
For now, there are no known exoplanets in this star system.
Frequently Asked Questions
How far is the Gamma Cephei B system from the Sun?
The Gamma Cephei B system is 45 light years or 13.8 parsecs from the Sun.
What galaxy is the Gamma Cephei B star in?
The Gamma Cephei B is in the Milky Way galaxy just like the Sun.
How many stars are in the Gamma Cephei B system?
The Gamma Cephei B is a single star, there are no other known stars in the system.
What type of star is the Gamma Cephei B?
The star Gamma Cephei B is a Red dwarf star.
What temperature is the Gamma Cephei B?
The primary in the Gamma Cephei B system has an effective temperature of K ( °C). Find out more about the temperature of stars in
Stellar guide
Class of stars Red dwarf
Red dwarfs are small, cool stars with surface temperatures of about 2,000–3,800 K, much cooler than the Sun. They usually have 8–50% of the Sun’s mass and shine very faintly, sometimes at just a tiny fraction of the Sun’s brightness. Classified mainly as spectral type M, they are the most common stars in the Milky Way, making up roughly 70–75% of its stellar population.
They fuse hydrogen slowly through the proton–proton chain and are fully convective, which allows them to use their fuel very efficiently. As a result, red dwarfs can live for tens of billions to trillions of years—far longer than the Sun. Many exoplanets orbit red dwarfs, including some in close habitable zones, though strong stellar activity can affect planetary environments.
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Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.
Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.
Stellar Catalog is continuously updated with new information from research papers. Stellar and planetary data are validated by automatic processes as well as humans.