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Chi Pegasi
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Star Chi Pegasi

Red giant Chi Pegasi is located 368 light years away from the Sun. It is a single star of spectral class M2+III, that has 106 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
368 light years
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Chi Pegasi

Red giant
Spectral class: M2+III

Location +

Ascension iconRight ascension: 0h 14m 36.165s
Declination iconDeclination: 20° 12' 24.121'' (northern hemisphere)
Parallax iconParallax: 8.860
Distance iconSun distance: 368.122 ly | 112.9 pc
Star position
The position of a star tells us where it appears in the sky, similar to how we use coordinates like latitude and longitude on Earth. In astronomy, the three main coordinates are right ascension, declination and distance. .. icon More about Star position in StellarGuide

Basic characteristic

icon weight
Mass: 106 % M Sun
| 1110 M Jupiter
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Star mass
Mass of the star Chi Pegasi is 1.06 solar masses.

The mass of a star is the total amount of matter it contains. It is one of the most important properties of a star, as it determines almost everything about how the star lives, changes, and dies. In astronomy, star mass is usually measured in solar masses (M☉) — where 1 solar mass is equal to the mass of our Sun... icon More about Star mass in StellarGuide
radius icon
Size: 5288 % R Sun
| 526.2 R Jupiter
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Star size
Radius of the star Chi Pegasi is 52.88 solar radii.

The size of a star refers to its radius — the distance from its center to its surface. Star size is usually measured in solar radii (R☉), where 1 solar radius equals approximately 696,000 kilometers. Depending on their type and life stage, stars can be much smaller or larger than the Sun... icon More about Star size in StellarGuide
temperature icon
Temperature: 3842 K | 0.66 T Sun
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Star temperature
Surface temperature of Chi Pegasi is 3842 K, which is 66 % of the temperature on the surface of the Sun.

The temperature of a star refers to the temperature at its surface, also called the photosphere. It is measured in kelvins (K), the standard unit for temperature in astronomy. A star’s temperature tells us a lot about its physical properties and where it stands in its evolutionary stage... icon More about Star temperature in StellarGuide
time icon
Age: 8 billions years | 1.74 Sun
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Star age
Star Chi Pegasi is 8 billion years old, which is about 1.74 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age in StellarGuide
luminosity icon
Luminosity: 435 L Sun
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Star luminosity
Luminosity is the total amount of energy a star gives off every second. Think of it as the star’s true brightness — not just how bright it looks from Earth. This is important because some stars may appear dim simply because they are far away, not because they’re actually faint... icon More about Star luminosity in StellarGuide
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Chi Pegasi system structure

 Chi Pegasi

More about Chi Pegasi

Star Chi Pegasi is is much bigger than the Sun and temperature on its surface is around 3842 K (3569 °C), which is about 66 % of Sun's temperature.
       Chi Pegasi can be found in northern celestial hemisphere.
Other designations of this star
χ Peg, 89 Pegasi, NSV 99, BD+19°27, FK5 1004, GC 270, HD 1013, HIC 1168, HIP 1168, HR 45, SAO 91792
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Frequently Asked Questions

How far is the Chi Pegasi system from the Sun?

The Chi Pegasi system is 368 light years or 112.9 parsecs from the Sun.

What galaxy is the Chi Pegasi star in?

The Chi Pegasi is in the Milky Way galaxy just like the Sun.

How many stars are in the Chi Pegasi system?

The Chi Pegasi is a single star, there are no other known stars in the system.

What type of star is the Chi Pegasi?

The star Chi Pegasi is a Red giant star.

What temperature is star Chi Pegasi?

The star Chi Pegasi has an effective temperature of 3842 K. Find out more about the temperature of stars in Stellar guide
Class of stars Red giant
White dwarfs are the hot, extremely dense stellar remnants left behind by stars that originally had masses between about 0.5 and 8 times the mass of the Sun during their main sequence lifetimes. After exhausting their nuclear fuel, these stars shed their outer layers and leave behind a compact core. Although white dwarfs contain between roughly 0.2 and 1.44 solar masses, this mass is packed into a volume comparable to that of an Earth-sized planet, making them some of the densest objects in the Universe.
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