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TOI-2119 B
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Star TOI-2119 B

Little is known about object TOI-2119 B. Based on its low brightness and position it seems to be a brown dwarf or a very low-mass star.
Sun distance
103 light years
galaxy map

TOI-2119 B

Brown dwarf

Location +

Distance iconDistance from the primary: 0.064 AU

Basic characteristic

icon weight
Mass: 6.4 % M Sun
| 5 M Jupiter
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Star mass
Mass of the star TOI-2119 B is 0.064 solar masses (or 67 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: 11 % R Sun
| 1.1 R Jupiter
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Star size
Radius of the star TOI-2119 B is 0.11 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: 2100 K | 0.36 T Sun
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Star temperature
Surface temperature of TOI-2119 B is 2100 K, which is 36 % 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
More about TOI-2119 B
TOI-2119 B is approximately 10 % of the size of Sun and temperature on its surface is around 2100 K (1827 °C), which is about 36 % of Sun's temperature.
       TOI-2119 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.
Other designations of this star
TOI-2119.01
External sources
icon study
JWST/MIRI Imaging of the Warm Dust Component of the Epsilon Eridani Debris Disk
Scientific study, Accepted: 29. 09. 2025
icon study
Detection of OH and Fe in the dayside atmosphere of the hottest ultra-hot Jupiter KELT-9b with SPIRou
Scientific study, Accepted: 28. 09. 2025
icon study
HARPS-N Reveals a Well-aligned Orbit for the Highly Eccentric Warm Jupiter TOI-4127 b
Scientific study, Accepted: 26. 09. 2025
icon study
Testing the Impact of Planet-stirring, Self-stirring, and Mixed-stirring on Debris Disc Architecture: A Case Study of HD 16743
Scientific study, Accepted: 26. 09. 2025
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.
News from this star system
calendar icon20. 03 2023
tag iconStars
Article image:

Astronomers have discovered a brown dwarf orbiting the red giant HD 18438

Astronomers led by Byeong-Cheol Lee have made a groundbreaking discovery, detecting a brown dwarf orbiting the red giant HD 18438. With a radius of 89 times that of the Sun, HD 18438 is now the largest known star to be orbited by an exoplanet or brown dwarf.

Read more
calendar icon09. 03 2023
tag iconExoplanets
Article image:

Newly discovered exoplanet HD 207496 b is too close to its star and is loosing atmosphere

Read more
calendar icon03. 03 2023
tag iconExoplanets
Article image:

Two giant exoplanets discovered orbiting nearby Sun-like star HIP 104045

Astronomers discovered two new exoplanets orbiting a star HIP 104045. The star is 175 light years away and its mass and size are similar to the Sun. Both exoplanets are gas giants, smaller than Jupiter.

Read more
calendar icon08. 02 2023
tag iconBrown dwarfs
Article image:

Astronomers used JWST and TESS telescopes to study nearby brown dwarf HD 19467 B

Brown dwarfs are objects between planets and stars. Astronomers divide them into 3 categories according to their temperature - L, T, Y. Their relatively low temperatures and brightness allow them to stay hidden for most part. Only the most powerful infrared telescopes are able to see them and that is where James Webb Space Telescope comes in.

Read more

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