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Epsion Indi Ba
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Star Epsion Indi Ba

Brown dwarf Epsion Indi Ba is located 12 light years away from the Sun. It is a single star of spectral class T1, that has 7 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
12 light years
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Epsion Indi Ba

Brown dwarf
Spectral class: T1

Location +

Distance iconDistance from the primary: 1460 AU

Basic characteristic

icon weight
Mass: 6.6 % M Sun
| 69 M Jupiter
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Star mass
Mass of the star Epsion Indi Ba is 0.066 solar masses (or 69.1 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 % R Sun
| 0.8 R Jupiter
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Star size
Radius of the star Epsion Indi Ba is 0.08 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: 1360 K | 0.24 T Sun
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Star temperature
Surface temperature of Epsion Indi Ba is 1360 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
luminosity icon
Luminosity: 0.00002 L Sun
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Star luminosity
Luminosity is the total amount of energy a star gives off every second. Think of it as the star’s true brightness — not just how bright it looks from Earth. This is important because some stars may appear dim simply because they are far away, not because they’re actually faint... icon More about Star luminosity in StellarGuide

Photometry

Magnitude iconAbsolute magnitude (V): 2.2
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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Epsion Indi Ba system structure

 Epsilon Indi A
Epsilon Indi A b 11.08 AU 941 M⊕ 10.6 R⊕ 15676.5 days
Epsion Indi Ba 1460 AU
Epsion Indi Bb 2.4 AU

More about Epsion Indi Ba

Epsion Indi Ba is is is much smaller than the Sun and temperature on its surface is around 1360 K (1087 °C), which is about 24 % of Sun's temperature.
       Epsion Indi Ba 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
Gaia EDR3 6412596012146801152
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External sources
icon study
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Scientific study, Accepted: 29. 12. 2026
icon study
A Sample of Thick-Disk Stars Hosting Hot Jupiters
Scientific study, Accepted: 16. 10. 2026
icon study
icon study
icon study
icon study
icon study
icon study
icon study
A Spatial Map of the Atmospheric Limb of a Hot Jupiter
Scientific study, Accepted: 14. 10. 2026
icon study
simbad icon
Simbad database (* eps Ind B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 6412596012146801152)
Archive from the Gaia mission

News from this star system

WASP-33 b and other hot Jupiters identified as prime targets for structural studies
iconYesterday
Image: WASP-33 b and other hot Jupiters identified as prime targets for structural studies
WASP-33 b, WASP-76 b, and HAT-P-32 b are identified as the best candidates for studying how stellar gravity shapes exoplanet interiors. Measuring their physical deformation will help reveal their deep, internal density structures using JWST and Ariel data....
Read article tag icon
Atmospheric structure of WASP-94 A b revealed through new limb asymmetry method
iconYesterday
Image: Atmospheric structure of WASP-94 A b revealed through new limb asymmetry method
A new analysis of WASP-94 A b reveals a 415 K temperature difference between its morning and evening sides. The evening atmosphere shows signs of H2O, CO2, CO, and H2S, while the morning side remains obscured by aerosols....
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Thick-disk stars identified as hosts to ancient hot jupiter planets
iconYesterday
Image: Thick-disk stars identified as hosts to ancient hot jupiter planets
New analysis of 268 stars identifies several hot Jupiters orbiting ancient stars in the Milky Way's thick disk. These systems, over 8 billion years old, show distinct differences in mass and orbital periods compared to younger thin-disk populations....
Read article tag icon

Frequently Asked Questions

How far is the Epsion Indi Ba system from the Sun?

The Epsion Indi Ba system is 12 light years or 3.7 parsecs from the Sun.

What galaxy is the Epsion Indi Ba star in?

The Epsion Indi Ba is in the Milky Way galaxy just like the Sun.

How many stars are in the Epsion Indi Ba system?

The Epsion Indi Ba is a single star, there are no other known stars in the system.

What type of star is the Epsion Indi Ba?

The star Epsion Indi Ba is a Brown dwarf star.

What temperature is star Epsion Indi Ba?

The star Epsion Indi Ba has an effective temperature of 1360 K. 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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