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Gliese 1245
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Star Gliese 1245

Triple star system Gliese 1245 is located 15 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
15 light years
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Gliese 1245 A

Red dwarf, flare star
Spectral class: M5.5 V

Location +

Ascension iconRight ascension: 19h 53m 55.671s
Declination iconDeclination: 44° 24' 46.462'' (northern hemisphere)
Parallax iconParallax: 214.575
Distance iconSun distance: 15.200 ly | 4.7 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: 11 % M Sun
| 115 M Jupiter
+
Star mass
Mass of the star Gliese 1245 A is 0.11 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
| 1.3 R Jupiter
(estimate)
+
Star size
Radius of the star Gliese 1245 A 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 icon
Temperature: 2749 K | 0.48 T Sun
+
Star temperature
Surface temperature of Gliese 1245 A is 2749 K, which is 48 % 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: 0.3 billions years | 0.07 Sun
+
Star age
Star Gliese 1245 A is 0.3 billion years old, which is about 0.07 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: 0.000084 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): 13.1
Magnitude iconAbsolute magnitude (V): 14.8
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

Gliese 1245 B

Red dwarf, flare star
Spectral class: M5.5 V

Basic characteristic

icon weight
Mass: 10 % M Sun
| 105 M Jupiter
+
Star mass
Mass of the star Gliese 1245 B is 0.11 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
| 1.1 R Jupiter
(estimate)
+
Star size
Radius of the star Gliese 1245 B 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 icon
Temperature: 2944 K | 0.51 T Sun
+
Star temperature
Surface temperature of Gliese 1245 B is 2944 K, which is 51 % 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: 0.3 billions years | 0.07 Sun
+
Star age
Star Gliese 1245 B is 0.3 billion years old, which is about 0.07 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: 0.000048 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): 14
Magnitude iconAbsolute magnitude (V): 15.6
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 1245 C

Red dwarf, flare star
Spectral class: M6 V

Basic characteristic

icon weight
Mass: 7 % M Sun
| 73 M Jupiter
+
Star mass
Mass of the star Gliese 1245 C is 0.1 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 1245 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: 3100 K
 (estimate)
+
Star temperature
Surface temperature of Gliese 1245 C is estimated to be 3053 K, which is 54 % 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: 0.3 billions years | 0.07 Sun
+
Star age
Star Gliese 1245 C is 0.3 billion years old, which is about 0.07 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

Photometry

Magnitude iconAbsolute magnitude (V): 1.7
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
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Gliese 1245 system structure

 Gliese 1245 A
Gliese 1245 B
Gliese 1245 C

More about Gliese 1245

       Gliese 1245 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
NLTT 48415, LHS 3495, 2MASS J19535508+4424550, G 208-44 B, NLTT 48414, LHS 3494, 2MASS J19535443+4424541, G 208-45, G 208-44, G 208-45, V1581 Cygni, Gaia EDR3 2079073928612821760
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Frequently Asked Questions

How far is the Gliese 1245 system from the Sun?

The Gliese 1245 system is 15 light years or 4.7 parsecs from the Sun.

What galaxy is the Gliese 1245 star in?

The Gliese 1245 is in the Milky Way galaxy just like the Sun.

How many stars are in the Gliese 1245 system?

The Gliese 1245 system contains 3 stars.

What type of star is the Gliese 1245?

The primary in the Gliese 1245 system is a Red dwarf star.

What temperature is star Gliese 1245?

The primary in the Gliese 1245 system has a temperature of 2749 K. Find out more about the temperature of stars in Stellar guide
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