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83 Leonis B
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Star 83 Leonis B

Orange star 83 Leonis B is located 59 light years away from the Sun. It is a single star of spectral class K3 D, that has 83 % of solar mass. There are multiple known exoplanets in this system.
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Sun distance
59 light years
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83 Leonis B

Orange star, High proper motion star
Spectral class: K3 D

Basic characteristic

icon weight
Mass: 83 % M Sun
| 869 M Jupiter
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Star mass
Mass of the star 83 Leonis B is 0.83 solar 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: 96 % R Sun
| 9.6 R Jupiter
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Star size
Radius of the star 83 Leonis B is 0.96 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: 4973 K | 0.86 T Sun
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Star temperature
Surface temperature of 83 Leonis B is 4973 K, which is 86 % 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
time icon
Age: 4 billions years | 0.87 Sun
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Star age
Star 83 Leonis B is 4 billion years old, which is about 0.87 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age in StellarGuide
luminosity icon
Luminosity: 0.418 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 iconApparent magnitude (V): 7.5
Magnitude iconAbsolute magnitude (V): 6.2
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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83 Leonis B system structure

 83 Leonis A
83 Leonis B
83 Leonis B b 0.12 AU 25.5 M⊕ 17.1 days
83 Leonis B c 5.4 AU 17.9 M⊕ 95.2 days

More about 83 Leonis B

83 Leonis B is approximately 100 % of the size of Sun and temperature on its surface is around 4973 K (4700 °C), which is about 86 % of Sun's temperature.
       83 Leonis B can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
HD 99492, BD+03° 2502, Gaia EDR3 3812355294262255104
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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 (* 83 Leo B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 3812355294262255104)
Archive from the Gaia mission

News from this star system

WASP-33 b and other hot Jupiters identified as prime targets for structural studies
iconToday
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....
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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....
Read article tag icon
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....
Read article tag icon

Frequently Asked Questions

How far is the 83 Leonis B system from the Sun?

The 83 Leonis B system is 59 light years or 18.2 parsecs from the Sun.

What galaxy is the 83 Leonis B star in?

The 83 Leonis B is in the Milky Way galaxy just like the Sun.

How many stars are in the 83 Leonis B system?

The 83 Leonis B is a single star, there are no other known stars in the system.

What type of star is the 83 Leonis B?

The star 83 Leonis B is a Orange star star.

What temperature is star 83 Leonis B?

The star 83 Leonis B has an effective temperature of 4973 K. Find out more about the temperature of stars in Stellar guide
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