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CFBDSIR J1458+10 B
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Star CFBDSIR J1458+10 B

Sub-brown dwarf CFBDSIR J1458+10 B is located 104 light years away from the Sun. It is a single star of spectral class Y0, that has 1 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
104 light years
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CFBDSIR J1458+10 B

Sub-brown dwarf
Spectral class: Y0

Location +

Distance iconDistance from the primary: 4.06 AU

Basic characteristic

icon weight
Mass: 0.9 % M Sun
| 9 M Jupiter
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Star mass
Mass of the star CFBDSIR J1458+10 B is 0.009 solar masses (or 9.4 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: 1.3 % R Sun
| 0.1 R Jupiter
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Star size
Radius of the star CFBDSIR J1458+10 B is 0.013 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: 370 K | 0.06 T Sun
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Star temperature
Surface temperature of CFBDSIR J1458+10 B is 370 K, which is 6 % 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
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CFBDSIR J1458+10 B system structure

 CFBDSIR J1458+10 A
CFBDSIR J1458+10 B 4.06 AU

More about CFBDSIR J1458+10 B

CFBDSIR J1458+10 B is is is much smaller than the Sun and temperature on its surface is around 370 K (97 °C), which is about 6 % of Sun's temperature.
       CFBDSIR J1458+10 B can be found in northern 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
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
A Spatial Map of the Atmospheric Limb of a Hot Jupiter
Scientific study, Accepted: 14. 10. 2026
icon study
icon study

News from this star system

Atmospheric structure of WASP-94 A b revealed through new limb asymmetry method
iconToday
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
iconToday
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....
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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....
Read article tag icon

Frequently Asked Questions

How far is the CFBDSIR J1458+10 B system from the Sun?

The CFBDSIR J1458+10 B system is 104 light years or 31.9 parsecs from the Sun.

What galaxy is the CFBDSIR J1458+10 B star in?

The CFBDSIR J1458+10 B is in the Milky Way galaxy just like the Sun.

How many stars are in the CFBDSIR J1458+10 B system?

The CFBDSIR J1458+10 B is a single star, there are no other known stars in the system.

What type of star is the CFBDSIR J1458+10 B?

The star CFBDSIR J1458+10 B is a Sub-brown dwarf star.

What temperature is star CFBDSIR J1458+10 B?

The star CFBDSIR J1458+10 B has an effective temperature of 370 K. Find out more about the temperature of stars in Stellar guide
Class of stars Sub-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. Brown dwarfs of spectral class Y are the coolest and only a few of them have been discovered so far.
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