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Gamma Columbae
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Star Gamma Columbae

Binary star Gamma Columbae is located 870 light years away from the Sun. It consists of a subgiant and a yellow star. For now, there are no known exoplanets in this star system.
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Sun distance
870 light years
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Gamma Columbae A

Subgiant
Spectral class: B2.5 IV

Location +

Ascension iconRight ascension: 5h 57m 32.210s
Declination iconDeclination: -35° 16' 59.815'' (southern hemisphere)
Parallax iconParallax: 3.750
Distance iconSun distance: 869.749 ly | 266.7 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: 570 % M Sun
| 5971 M Jupiter
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Star mass
Mass of the star Gamma Columbae A is 5.7 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: 480 % R Sun
| 47.8 R Jupiter
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Star size
Radius of the star Gamma Columbae A is 4.8 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: 12904 K | 2.23 T Sun
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Star temperature
Surface temperature of Gamma Columbae A is 12904 K, which is 223 % 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: 23 billions years | 5 Sun
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Star age
Star Gamma Columbae A is 23 billion years old, which is about 5 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: 2070 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

Photometry

Magnitude iconApparent magnitude (V): 4.4
Magnitude iconAbsolute magnitude (V): -2.8
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

Gamma Columbae B

Yellow star
Spectral class: G8 V

Location +

Distance iconDistance from the primary: 8844 AU

Basic characteristic

icon weight
Mass: 94 % M Sun
| 985 M Jupiter
+
Star mass
Mass of the star Gamma Columbae B is 5.7 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: 100 % R Sun
| 10.3 R Jupiter
(estimate)
+
Star size
Radius of the star Gamma Columbae B is not known. Its estimated value based on other similar stars is about 100 % 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: 5367 K | 0.93 T Sun
+
Star temperature
Surface temperature of Gamma Columbae B is 5367 K, which is 93 % 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 iconAbsolute magnitude (V): -7.1
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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Gamma Columbae system structure

 Gamma Columbae A
Gamma Columbae B 8844 AU

More about Gamma Columbae

       Gamma Columbae can be found in southern celestial hemisphere, and it is possible to see it with naked eye. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
γ Col, BD−35° 2612, HD 40494, HIP 28199, HR 2106, SAO 196352
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Frequently Asked Questions

How far is the Gamma Columbae system from the Sun?

The Gamma Columbae system is 870 light years or 266.7 parsecs from the Sun.

What galaxy is the Gamma Columbae star in?

The Gamma Columbae is in the Milky Way galaxy just like the Sun.

How many stars are in the Gamma Columbae system?

The Gamma Columbae system contains 2 stars.

What type of star is the Gamma Columbae?

The primary in the Gamma Columbae system is a Subgiant star.

What temperature is star Gamma Columbae?

The primary in the Gamma Columbae system has a temperature of 12904 K. Find out more about the temperature of stars in Stellar guide
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