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2MASS 0939-2448
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Star 2MASS 0939-2448

Binary star 2MASS 0939-2448 is located 17 light years away from the Sun. It consists of 2 brown dwarf stars. For now, there are no known exoplanets in this star system.
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Sun distance
17 light years
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2MASS 0939-2448 A

Brown dwarf
Spectral class: T8

Location +

Ascension iconRight ascension: 9h 39m 35.480s
Declination iconDeclination: -24° 48' 27.943'' (southern hemisphere)
Parallax iconParallax: 196.000
Distance iconSun distance: 16.641 ly | 5.1 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: 3.3 % M Sun
| 35 M Jupiter
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Star mass
Mass of the star 2MASS 0939-2448 A is 0.033 solar masses (or 34.6 Jupiter 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: 12.5 % R Sun
| 1.2 R Jupiter
+
Star size
Radius of the star 2MASS 0939-2448 A is 0.125 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: 500 K | 0.09 T Sun
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Star temperature
Surface temperature of 2MASS 0939-2448 A is 500 K, which is 9 % 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: 8 billions years | 1.74 Sun
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Star age
Star 2MASS 0939-2448 A is 8 billion years old, which is about 1.74 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

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

2MASS 0939-2448 B

Brown dwarf
Spectral class: T8

Basic characteristic

icon weight
Mass: 2.8 % M Sun
| 29 M Jupiter
+
Star mass
Mass of the star 2MASS 0939-2448 B is 0.033 solar masses (or 34.6 Jupiter 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
| 0.6 R Jupiter
(estimate)
+
Star size
Radius of the star 2MASS 0939-2448 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 iconTemperature: 700 K
 (estimate)
+
Star temperature
Surface temperature of 2MASS 0939-2448 B is estimated to be 686 K, which is 12 % 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: 8 billions years | 1.74 Sun
+
Star age
Star 2MASS 0939-2448 B is 8 billion years old, which is about 1.74 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

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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2MASS 0939-2448 system structure

 2MASS 0939-2448 A
2MASS 0939-2448 B

More about 2MASS 0939-2448

       2MASS 0939-2448 can be found in southern celestial hemisphere.
Other designations of this star
2MASS J09393548−2448279, 2MASS J09393548-2448279
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Frequently Asked Questions

How far is the 2MASS 0939-2448 system from the Sun?

The 2MASS 0939-2448 system is 17 light years or 5.1 parsecs from the Sun.

What galaxy is the 2MASS 0939-2448 star in?

The 2MASS 0939-2448 is in the Milky Way galaxy just like the Sun.

How many stars are in the 2MASS 0939-2448 system?

The 2MASS 0939-2448 system contains 2 stars.

What type of star is the 2MASS 0939-2448?

The primary in the 2MASS 0939-2448 system is a Brown dwarf star.

What temperature is star 2MASS 0939-2448?

The primary in the 2MASS 0939-2448 system has a temperature of 500 K. Find out more about the temperature of stars in Stellar guide
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