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HD 89744 B
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Star HD 89744 B

Brown dwarf HD 89744 B is located 126 light years away from the Sun. It is a single star of spectral class L0.5, that has 8 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
126 light years
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HD 89744 B

Brown dwarf
Spectral class: L0.5

Location +

Distance iconDistance from the primary: 2456 AU

Basic characteristic

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Mass: 7.6 % M Sun
| 80 M Jupiter
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Star mass
Mass of the star HD 89744 B is 0.076 solar masses (or 79.6 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
temperature icon
Temperature: 2226 K | 0.39 T Sun
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Star temperature
Surface temperature of HD 89744 B is 2226 K, which is 39 % 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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HD 89744 B system structure

 HD 89744 A
HD 89744 A b 0.92 AU 2654.5 M⊕ 256.8 days
HD 89744 A c 8.3 AU 1704 M⊕ 6974 days
HD 89744 B 2456 AU

More about HD 89744 B

Temperature on its surface is around 2226 K (1953 °C), which is about 39 % of Sun's temperature.
       HD 89744 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
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Scientific study, Accepted: 29. 12. 2026
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A Spatial Map of the Atmospheric Limb of a Hot Jupiter
Scientific study, Accepted: 14. 10. 2026
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News from this star system

Narrow ring of gas found near the young star HD 152384
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Image: Narrow ring of gas found near the young star HD 152384
A narrow ring of gas has been characterized around the young star HD 152384. Located at the dust sublimation radius, the ring likely formed from the collisions of rocky planetesimals, offering a new look at early planetary system evolution....
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Atmospheric composition of hot Jupiter KELT-2A b reveals chemical history
iconToday
Image: Atmospheric composition of hot Jupiter KELT-2A b reveals chemical history
New observations of hot Jupiter KELT-2A b confirm water vapor in its atmosphere. The planet shows a carbon-to-oxygen ratio similar to its host star but with overall lower metallicity, suggesting a complex migration history from far out in its star system....
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Periodic transit timing variations measured for Neptune-like planet HAT-P-18 b
iconToday
Image: Periodic transit timing variations measured for Neptune-like planet HAT-P-18 b
New observations from the James Webb Space Telescope show periodic transit timing variations in the Neptune-like planet HAT-P-18 b. The data indicates an orbital timing shift of 92.9 seconds, providing fresh insights into the dynamics of this distant system....
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Frequently Asked Questions

How far is the HD 89744 B system from the Sun?

The HD 89744 B system is 126 light years or 38.7 parsecs from the Sun.

What galaxy is the HD 89744 B star in?

The HD 89744 B is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 89744 B system?

The HD 89744 B is a single star, there are no other known stars in the system.

What type of star is the HD 89744 B?

The star HD 89744 B is a Brown dwarf star.

What temperature is star HD 89744 B?

The star HD 89744 B has an effective temperature of 2226 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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