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Gliese 105
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Star Gliese 105

Triple star system Gliese 105 is located 24 light years away from the Sun. It is a system with 3 stars. For now, there are no known exoplanets in this star system.
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Sun distance
24 light years
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Gliese 105 A

Orange star, High proper motion star
Spectral class: K3V

Location +

Ascension iconRight ascension: 2h 36m 6.813s
Declination iconDeclination: 6° 53' 36.021'' (equatorial region)
Parallax iconParallax: 138.340
Distance iconSun distance: 23.576 ly | 7.2 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: 74 % M Sun
| 775 M Jupiter
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Star mass
Mass of the star Gliese 105 A is 0.74 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: 65 % R Sun
| 6.5 R Jupiter
+
Star size
Radius of the star Gliese 105 A is 0.65 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: 4699 K | 0.81 T Sun
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Star temperature
Surface temperature of Gliese 105 A is 4699 K, which is 81 % 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
luminosity icon
Luminosity: 0.26 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

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

Gliese 105 B

Red dwarf, BY Draconis variable
Spectral class: M3.5V

Basic characteristic

icon weight
Mass: 24.6 % M Sun
| 258 M Jupiter
+
Star mass
Mass of the star Gliese 105 B is 0.74 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: 28 % R Sun
| 2.8 R Jupiter
+
Star size
Radius of the star Gliese 105 B is 0.278 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: 3327 K | 0.58 T Sun
+
Star temperature
Surface temperature of Gliese 105 B is 3327 K, which is 58 % 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

Gliese 105 C

Red dwarf, , BY Draconis variable
Spectral class: M4V

Basic characteristic

icon weight
Mass: 8 % M Sun
| 84 M Jupiter
+
Star mass
Mass of the star Gliese 105 C is 0.246 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: 10 % R Sun
| 0.9 R Jupiter
(estimate)
+
Star size
Radius of the star Gliese 105 C is not known. Its estimated value based on other similar stars is about 10 % 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: 3300 K
 (estimate)
+
Star temperature
Surface temperature of Gliese 105 C is estimated to be 3300 K, which is 57 % 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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Gliese 105 system structure

 Gliese 105 A
Gliese 105 B
Gliese 105 C

More about Gliese 105

      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. Gliese 105 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. 

      Gliese 105 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
BX Ceti, BX Cet, LHS 16, LTT 10859, G 73-71, G 76-12, LFT 217, GJ 105 B, HR 753, HD 16160, LHS 15, LHS 16, LTT 10858, SAO 110636, FK5 1073, G 73-70, G 76-11, LFT 217, HIP 12114, 268 G. Ceti, Gaia EDR3 19316224572460416
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Frequently Asked Questions

How far is the Gliese 105 system from the Sun?

The Gliese 105 system is 24 light years or 7.2 parsecs from the Sun.

What galaxy is the Gliese 105 star in?

The Gliese 105 is in the Milky Way galaxy just like the Sun.

How many stars are in the Gliese 105 system?

The Gliese 105 system contains 3 stars.

What type of star is the Gliese 105?

The primary in the Gliese 105 system is a Orange star star.

What temperature is star Gliese 105?

The primary in the Gliese 105 system has a temperature of 4699 K. Find out more about the temperature of stars in Stellar guide
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