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15 Pegasi
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Star 15 Pegasi

Yellow-White star 15 Pegasi is located 88 light years away from the Sun. It is a single star of spectral class F2V, that has typically about 130 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
88 light years
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15 Pegasi

Yellow-White star, High proper motion star
Spectral class: F2V

Location +

Ascension iconRight ascension: 21h 52m 29.850s
Declination iconDeclination: 28° 47' 35.765'' (northern hemisphere)
Parallax iconParallax: 37.059
Distance iconSun distance: 88.010 ly | 27.0 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: 150 % M Sun
| 1519 M Jupiter
 (estimate)
+
Star mass
The mass of the star 15 Pegasi is unknown. Based on its other characteristics, it is estimated to be about 150 % of the Sun's mass.

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: 180 % R Sun
| 18 R Jupiter
(estimate)
+
Star size
Radius of the star 15 Pegasi is not known. Its estimated value based on other similar stars is about 180 % 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 iconTemperature: 6800 K
 (estimate)
+
Star temperature
Surface temperature of 15 Pegasi is estimated to be 6840 K, which is 118 % 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

Photometry

Magnitude iconApparent magnitude (V): 5.5
Magnitude iconAbsolute magnitude (V): 3.4
Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).
5
10
15
20
25
30
35
K
2.1
H
1.6
J
1.2
Grp
0.8
I
0.8
G
0.6
V
0.5
Gbp
0.5
B
0.4
U
0.3
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15 Pegasi system structure

 15 Pegasi

More about 15 Pegasi

Nearby star 15 Pegasi is a main sequence star that fuses hydrogen atoms into helium. 
       15 Pegasi can be found in northern celestial hemisphere, and it is possible to see it with naked eye. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
Gaia DR3 1896396703077703936
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External sources
simbad icon
Simbad database (* 15 Peg)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 1896396703077703936)
Archive from the Gaia mission

Frequently Asked Questions

How far is the 15 Pegasi system from the Sun?

The 15 Pegasi system is 88 light years or 27.0 parsecs from the Sun.

What galaxy is the 15 Pegasi star in?

The 15 Pegasi is in the Milky Way galaxy just like the Sun.

How many stars are in the 15 Pegasi system?

The 15 Pegasi is a single star, there are no other known stars in the system.

What type of star is the 15 Pegasi?

The star 15 Pegasi is a Yellow-White star star.

What temperature is the 15 Pegasi?

The primary in the 15 Pegasi system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Possible companions

 StKM 1-1953
 - 0.2 ly
Closest stars

 G 188-39
 - 3.7 ly

HD 206374
 - 5 ly

2MASS J21533977+2950053
 - 5.5 ly

G 188-28
 - 7.4 ly

G 188-40
 - 7.7 ly
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exoplanet iconAbout Stellar Catalog

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Working with real data
icon 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.
Estimated values
icon 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.
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