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V2431 Cygni
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Star V2431 Cygni

Binary star V2431 Cygni is located 76 light years away from the Sun. It consists of a orange star and a red dwarf. For now, there are no known exoplanets in this star system.
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Sun distance
76 light years
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V2431 Cygni

Orange star, BY Draconis variable
Spectral class: K2.5V

Location +

Ascension iconRight ascension: 20h 49m 16.030s
Declination iconDeclination: 32° 17' 0.969'' (northern hemisphere)
Parallax iconParallax: 42.860
Distance iconSun distance: 76.098 ly | 23.3 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: 80 % M Sun
| 806.6 M Jupiter
 (estimate)
+
Star mass
The mass of the star V2431 Cygni is unknown. Based on its other characteristics, it is estimated to be about 80 % 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: 80 % R Sun
| 7.5 R Jupiter
(estimate)
+
Star size
Radius of the star V2431 Cygni is not known. Its estimated value based on other similar stars is about 80 % 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: 4800 K
 (estimate)
+
Star temperature
Surface temperature of V2431 Cygni is estimated to be 4791 K, which is 83 % 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

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

LP 340-69

Red dwarf, High proper motion star
Spectral class: M6.0

Basic characteristic

icon weight
Mass: 10 % M Sun
| 115.2 M Jupiter
 (estimate)
+
Star mass
The mass of the star LP 340-69 is unknown. Based on its other characteristics, it is estimated to be about 10 % 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: 20 % R Sun
| 1.6 R Jupiter
(estimate)
+
Star size
Radius of the star LP 340-69 is not known. Its estimated value based on other similar stars is about 20 % 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: 2900 K
 (estimate)
+
Star temperature
Surface temperature of LP 340-69 is estimated to be 2850 K, which is 50 % 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

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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V2431 Cygni system structure

 V2431 Cygni
LP 340-69

More about V2431 Cygni

      a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface. V2431 Cygni can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia. 

      V2431 Cygni is a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface.
Other designations of this star
Gaia EDR3 1859954627138933888
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External sources
simbad icon
Simbad database (LP 340-69)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 1859954695858413184)
Archive from the Gaia mission

Frequently Asked Questions

How far is the V2431 Cygni system from the Sun?

The V2431 Cygni system is 76 light years or 23.3 parsecs from the Sun.

What galaxy is the V2431 Cygni star in?

The V2431 Cygni is in the Milky Way galaxy just like the Sun.

How many stars are in the V2431 Cygni system?

The V2431 Cygni system contains 2 stars.

What type of star is the V2431 Cygni?

The primary in the V2431 Cygni system is a Orange star star.

What temperature is the V2431 Cygni?

The primary in the V2431 Cygni system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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G 210-26
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