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Luhman 16
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Star Luhman 16

Binary star Luhman 16 is located 7 light years away from the Sun. It consists of a brown dwarf and a brown dwarf. For now, there are no known exoplanets in this star system.
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Sun distance
7 light years
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Luhman 16 A

Brown dwarf
Spectral class: L7.5

Location +

Ascension iconRight ascension: 10h 49m 18.723s
Declination iconDeclination: -53° 19' 9.860'' (southern hemisphere)
Parallax iconParallax: 501.557
Distance iconSun distance: 6.503 ly | 2.0 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: 3.2 % M Sun
| 34 M Jupiter
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Star mass
Mass of the star Luhman 16 A is 0.032 solar masses (or 33.5 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: 8.7 % R Sun
| 0.9 R Jupiter
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Star size
Radius of the star Luhman 16 A is 0.087 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: 1300 K
 (estimate)
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Star temperature
Surface temperature of Luhman 16 A is estimated to be 1275 K, which is 22 % 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 iconApparent magnitude (V): 16.2
Magnitude iconAbsolute magnitude (V): 19.7
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

Luhman 16 B

Brown dwarf
Spectral class: T0.5

Location +

Distance iconDistance from the primary: 3.557 AU

Basic characteristic

icon weight
Mass: 2.7 % M Sun
| 28 M Jupiter
+
Star mass
Mass of the star Luhman 16 B is 0.032 solar masses (or 33.5 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: 10.7 % R Sun
| 1.1 R Jupiter
+
Star size
Radius of the star Luhman 16 B is 0.107 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

Photometry

Magnitude iconAbsolute magnitude (V): 3.5
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
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Luhman 16 system structure

 Luhman 16 A
Luhman 16 B 3.557 AU

More about Luhman 16

       Luhman 16 can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
LUH 16, Luhman–WISE 1, WISE J104915.57−531906.1, DENIS-P J104919.0−531910, 2MASS J10491891−5319100, IRAS Z10473-5303, AKARI J1049166−531907, GSC2.2 S11132026703, GSC2.3 S4BM006703
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External sources
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Frequently Asked Questions

How far is the Luhman 16 system from the Sun?

The Luhman 16 system is 7 light years or 2.0 parsecs from the Sun.

What galaxy is the Luhman 16 star in?

The Luhman 16 is in the Milky Way galaxy just like the Sun.

How many stars are in the Luhman 16 system?

The Luhman 16 system contains 2 stars.

What type of star is the Luhman 16?

The primary in the Luhman 16 system is a Brown dwarf star.

What temperature is the Luhman 16?

The primary in the Luhman 16 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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3. 11. 2026
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