do not follow here
Stellar Catalog more icon Nearby stars catalogue more icon
61 Cygni
more icon

Star 61 Cygni

Binary star 61 Cygni is located 11 light years away from the Sun. It consists of 2 orange star stars. There is at least one exoplanet in this system.
Loading 3D model
Nearby stars catalogue
Sun distance
11 light years
galaxy map

61 Cygni A

Orange star, BY Draconis variable
Spectral class: K5 V

Location +

Ascension iconRight ascension: 21h 6m 59.645s
Declination iconDeclination: 38° 45' 49.905'' (northern hemisphere)
Parallax iconParallax: 285.995
Distance iconSun distance: 11.404 ly | 3.5 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: 70 % M Sun
| 733 M Jupiter
+
Star mass
Mass of the star 61 Cygni A is 0.7 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: 67 % R Sun
| 6.6 R Jupiter
+
Star size
Radius of the star 61 Cygni A is 0.665 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: 4481 K | 0.78 T Sun
+
Star temperature
Surface temperature of 61 Cygni A is 4481 K, which is 78 % 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: 6.1 billions years | 1.33 Sun
+
Star age
Star 61 Cygni A is 6.1 billion years old, which is about 1.33 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: 0.153 L Sun
+
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

Photometry

Magnitude iconApparent magnitude (V): 5.2
Magnitude iconAbsolute magnitude (V): 7.5
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

61 Cygni B

Orange star, flare star, , BY Draconis variable
Spectral class: K7 V

Location +

Distance iconDistance from the primary: 24.272 AU

Basic characteristic

icon weight
Mass: 63 % M Sun
| 660 M Jupiter
+
Star mass
Mass of the star 61 Cygni B is 0.7 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: 60 % R Sun
| 5.9 R Jupiter
+
Star size
Radius of the star 61 Cygni B is 0.595 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: 3911 K | 0.68 T Sun
+
Star temperature
Surface temperature of 61 Cygni B is 3911 K, which is 68 % 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: 6.1 billions years | 1.33 Sun
+
Star age
Star 61 Cygni B is 6.1 billion years old, which is about 1.33 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: 0.085 L Sun
+
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

Photometry

Magnitude iconApparent magnitude (V): 6
Magnitude iconAbsolute magnitude (V): 8.3
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
Advertisement

61 Cygni system structure

 61 Cygni A
61 Cygni A b
unconfirmed
 1 AU 2543.3 M⊕ 11.4 R⊕ -
61 Cygni B 24.272 AU

More about 61 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. 61 Cygni 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. 

      61 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
HD 201092, HIP 104217, HR 8086, BD+38°4344, LHS 63, Gliese 820 A/B, Struve 2758, ADS 14636, V1803 Cygni, GCTP 5077.00, V1803 Cygni, HD 201091, HIP 104214, HR 8085, BD+38°4343, LHS 62, SAO 7091, 61 Cyg, Gaia EDR3 1872046609345556480
Advertisement
External sources
icon study
icon study
simbad icon
Simbad database (* 61 Cyg B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 1872046574983497216)
Archive from the Gaia mission

News from this star system

Analysis of 61 Cygni binary system reveals candidate super-Jupiter planet
Image: Analysis of 61 Cygni binary system reveals candidate super-Jupiter planet
Analysis of the nearby 61 Cygni binary system reveals a candidate super-Jupiter planet. With an estimated mass 8 times that of Jupiter, the object orbits at about 8 astronomical units, potentially influencing the habitability of the system for smaller, rocky planets....
29.9.2026
Read article >

Frequently Asked Questions

How far is the 61 Cygni system from the Sun?

The 61 Cygni system is 11 light years or 3.5 parsecs from the Sun.

What galaxy is the 61 Cygni star in?

The 61 Cygni is in the Milky Way galaxy just like the Sun.

How many stars are in the 61 Cygni system?

The 61 Cygni system contains 2 stars.

What type of star is the 61 Cygni?

The primary in the 61 Cygni system is a Orange star star.

What temperature is star 61 Cygni?

The primary in the 61 Cygni system has a temperature of 4481 K. Find out more about the temperature of stars in Stellar guide
Closest stars

 Gliese 1245
 0.11 M☉ 5.1 ly

Kruger 60
 0.27 M☉ 5.2 ly

Ross 248
 0.14 M☉ 5.6 ly

Struve 2398
 0.33 M☉ 6.1 ly

EV Lacertae
 0.35 M☉ 6.9 ly
3D map of stellar neighborhood
List of all nearby stars
Advertisement

exoplanet iconAbout Stellar Catalog

line
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.
Fresh and validated
icon Stellar Catalog is continuously updated with new information from research papers. Stellar and planetary data are validated by automatic processes as well as humans.
Get your next news from nearby stars
Stellar Catalog brings the stars from our galaxy to you. Discover their position, physical properties and whether there are any exoplanets or disks orbiting them. The data in Stellar Catalog come from respectable sources like Gaia space telescope, or SIMBAD database.
Visit Stellar catalog on Facebook
Visit profile on X

Advertisement