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Kepler 451
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Star Kepler 451

Kepler-451 is a binary star system located approximately 1,304 light-years from the Sun. The system consists of a hot, evolved star with a temperature of 29,564 K, a mass of 0.48 solar masses, and a radius of 0.223 solar radii. It is a well-studied target for observing orbital period variations and eclipse timing, which allow researchers to search for circumbinary planets and understand the complex gravitational interactions within the system.
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Sun distance
1305 light years
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Kepler 451

Hot subdwarf
Spectral class: sdBV

Location +

Ascension iconRight ascension: 19h 38m 32.600s
Declination iconDeclination: 46° 3' 59.000'' (northern hemisphere)
Parallax iconParallax: 2.500
Distance iconSun distance: 1,304.624 ly | 400.0 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: 48 % M Sun
| 503 M Jupiter
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Star mass
Mass of the star Kepler 451 is 0.48 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: 20 % R Sun
| 2 R Jupiter
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Star size
Radius of the star Kepler 451 is 0.203 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: 29564 K | 5.12 T Sun
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Star temperature
Surface temperature of Kepler 451 is 29564 K, which is 512 % 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): 12.7
Magnitude iconAbsolute magnitude (V): 4.7
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

Kepler 451 B

Red dwarf
Spectral class: M

Basic characteristic

icon weight
Mass: 12 % M Sun
| 126 M Jupiter
+
Star mass
Mass of the star Kepler 451 B is 0.48 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: 15.8 % R Sun
| 1.6 R Jupiter
+
Star size
Radius of the star Kepler 451 B is 0.158 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: 28600 K
 (estimate)
+
Star temperature
Surface temperature of Kepler 451 B is estimated to be 28647 K, which is 495 % 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
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Kepler 451 system structure

 Kepler 451
Kepler 451 c
disproven
 0.9 AU 591.3 M⊕ 406 days
Kepler 451 b
disproven
 0.92 AU 559.5 M⊕ 43 days
Kepler 451 d
disproven
 2.1 AU 511.8 M⊕ 1460 days
Kepler 451 e
unconfirmed
 3.4 AU 1192.2 M⊕ 3009 days
Kepler 451 B

More about Kepler 451

       Kepler 451 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
2M 1938+46, 2MASS 1938+4603, KIC 9472174, WISE J193832.61+460358.9 A, TYC 3556-3568-1 A, NSVS 5629361 A
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External sources
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Frequently Asked Questions

How far is the Kepler 451 system from the Sun?

The Kepler 451 system is 1305 light years or 400.0 parsecs from the Sun.

What galaxy is the Kepler 451 star in?

The Kepler 451 is in the Milky Way galaxy just like the Sun.

How many stars are in the Kepler 451 system?

The Kepler 451 system contains 2 stars.

What type of star is the Kepler 451?

The primary in the Kepler 451 system is a Hot subdwarf star.

What temperature is star Kepler 451?

The primary in the Kepler 451 system has a temperature of 29564 K. Find out more about the temperature of stars in Stellar guide
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