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2MASSW J2148162+400359
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Star 2MASSW J2148162+400359

Brown dwarf 2MASSW J2148162+400359 is located 26 light years away from the Sun. It is a single star of spectral class L7 , that has 5 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
26 light years
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2MASSW J2148162+400359

Brown dwarf
Spectral class: L7

Location +

Ascension iconRight ascension: 21h 48m 17.378s
Declination iconDeclination: 40° 4' 6.664'' (northern hemisphere)
Parallax iconParallax: 123.675
Distance iconSun distance: 26.372 ly | 8.1 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: 5.3 % M Sun
| 56 M Jupiter
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Star mass
Mass of the star 2MASSW J2148162+400359 is 0.053 solar masses (or 55.5 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: 9.9 % R Sun
| 1 R Jupiter
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Star size
Radius of the star 2MASSW J2148162+400359 is 0.099 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: 1400 K
 (estimate)
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Star temperature
Surface temperature of 2MASSW J2148162+400359 is estimated to be 1424 K, which is 24 % 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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2MASSW J2148162+400359 system structure

 2MASSW J2148162+400359

More about 2MASSW J2148162+400359

       2MASSW J2148162+400359 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
Gaia EDR3 1954170404122975232
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External sources
simbad icon
Simbad database (2MASSW J2148162+400359)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 1954170404122975232)
Archive from the Gaia mission

Frequently Asked Questions

How far is the 2MASSW J2148162+400359 system from the Sun?

The 2MASSW J2148162+400359 system is 26 light years or 8.1 parsecs from the Sun.

What galaxy is the 2MASSW J2148162+400359 star in?

The 2MASSW J2148162+400359 is in the Milky Way galaxy just like the Sun.

How many stars are in the 2MASSW J2148162+400359 system?

The 2MASSW J2148162+400359 is a single star, there are no other known stars in the system.

What type of star is the 2MASSW J2148162+400359?

The star 2MASSW J2148162+400359 is a Brown dwarf star.

What temperature is the 2MASSW J2148162+400359?

The primary in the 2MASSW J2148162+400359 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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stellar brief logoStellar Brief

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27. 10. 2026
stellar brief logo
A giant planet candidate near Boyajian’s star may look oversized because a broad ring system surrounds it, not because the planet itself is unusually large. New atmospheric models also show why methane and carbon monoxide can vary across hot gas giants, exposing major limits in simpler predictions.
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