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2MASSI J0423-0414
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Star 2MASSI J0423-0414

Binary star 2MASSI J0423-0414 is located 46 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
46 light years
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2MASSI J0423-0414 A

Brown dwarf
Spectral class: L6.5

Location +

Ascension iconRight ascension: 4h 23m 48.220s
Declination iconDeclination: -4° 14' 2.105'' (equatorial region)
Parallax iconParallax: 70.150
Distance iconSun distance: 46.494 ly | 14.3 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: 1.3 % M Sun
| 14 M Jupiter
+
Star mass
Mass of the star 2MASSI J0423-0414 A is 0.013 solar masses (or 13.6 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 2MASSI J0423-0414 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 iconTemperature: 1400 K
 (estimate)
+
Star temperature
Surface temperature of 2MASSI J0423-0414 A 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

2MASSI J0423-0414 B

Brown dwarf
Spectral class: T2

Basic characteristic

icon weight
Mass: 2 % M Sun
| 21 M Jupiter
 (estimate)
+
Star mass
The estimated mass of the star 2MASSI J0423-0414 B is about 2 % of the Sun's mass, or approximately 21 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
| 0.9 R Jupiter
(estimate)
+
Star size
Radius of the star 2MASSI J0423-0414 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: 1100 K
 (estimate)
+
Star temperature
Surface temperature of 2MASSI J0423-0414 B is estimated to be 1146 K, which is 19 % 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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2MASSI J0423-0414 system structure

 2MASSI J0423-0414 A
2MASSI J0423-0414 B

More about 2MASSI J0423-0414

       2MASSI J0423-0414 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
2MASSI J0423485-041403, SDSS J0423−0414AB, Gaia EDR3 3203124697405667712
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Frequently Asked Questions

How far is the 2MASSI J0423-0414 system from the Sun?

The 2MASSI J0423-0414 system is 46 light years or 14.3 parsecs from the Sun.

What galaxy is the 2MASSI J0423-0414 star in?

The 2MASSI J0423-0414 is in the Milky Way galaxy just like the Sun.

How many stars are in the 2MASSI J0423-0414 system?

The 2MASSI J0423-0414 system contains 2 stars.

What type of star is the 2MASSI J0423-0414?

The primary in the 2MASSI J0423-0414 system is a Brown dwarf star.

What temperature is the 2MASSI J0423-0414?

The primary in the 2MASSI J0423-0414 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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28. 10. 2026
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WISE J1517+05 flashes powerful radio bursts every 1.149 hours, making it one of the fastest-spinning ultracool dwarfs detected in radio waves. The latest reports also explore how transit changes can reveal a hidden planet in Kepler-88 and map a possible hotspot on WD 1202-024 B. Other findings track helium in V1298 Tau b’s atmosphere and a warped dust ring around CQ Tau.
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