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Luhman 16 B
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Star Luhman 16 B

Brown dwarf Luhman 16 B is located 7 light years away from the Sun. It is a single star of spectral class T0.5, that has 3 % of solar mass. 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 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
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Star mass
Mass of the star Luhman 16 B is 0.027 solar masses (or 28.3 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
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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 B system structure

 Luhman 16 A
Luhman 16 B 3.557 AU

More about Luhman 16 B

       Luhman 16 B can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
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External sources
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Scientific study, Accepted: 29. 12. 2026
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A Spatial Map of the Atmospheric Limb of a Hot Jupiter
Scientific study, Accepted: 14. 10. 2026
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icon study
icon study
icon study
Peering into the Midplane of the DM Tau Disk using N2H+ and DCO+
Scientific study, Accepted: 13. 10. 2026

News from this star system

Molecular emission in the disk around DM Tauri reveals complex chemical processes
iconYesterday
Image: Molecular emission in the disk around DM Tauri reveals complex chemical processes
Observations of the disk around DM Tauri reveal how N2H+ and DCO+ molecules are distributed. The data show that external UV radiation and cosmic rays influence the chemical makeup of the disk out to 400 astronomical units, impacting how planets may form....
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Narrow ring of gas found near the young star HD 152384
iconYesterday
Image: Narrow ring of gas found near the young star HD 152384
A narrow ring of gas has been characterized around the young star HD 152384. Located at the dust sublimation radius, the ring likely formed from the collisions of rocky planetesimals, offering a new look at early planetary system evolution....
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Atmospheric composition of hot Jupiter KELT-2A b reveals chemical history
iconYesterday
Image: Atmospheric composition of hot Jupiter KELT-2A b reveals chemical history
New observations of hot Jupiter KELT-2A b confirm water vapor in its atmosphere. The planet shows a carbon-to-oxygen ratio similar to its host star but with overall lower metallicity, suggesting a complex migration history from far out in its star system....
Read article tag icon

Frequently Asked Questions

How far is the Luhman 16 B system from the Sun?

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

What galaxy is the Luhman 16 B star in?

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

How many stars are in the Luhman 16 B system?

The Luhman 16 B is a single star, there are no other known stars in the system.

What type of star is the Luhman 16 B?

The star Luhman 16 B is a Brown dwarf star.

What temperature is the Luhman 16 B?

The primary in the Luhman 16 B system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Class of stars Brown dwarf
Brown dwarfs are not really stars, because there is no thermonuclear fusion in their core. These objects are smaller and cooler than stars, but too massive to be considered planets
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icon Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.
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