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Chi Leonis
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Star Chi Leonis

Binary star Chi Leonis is located 94 light years away from the Sun. It consists of a yellow giant and a red dwarf. For now, there are no known exoplanets in this star system.
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Sun distance
94 light years
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Chi Leonis A

Yellow giant, High proper motion star
Spectral class: F2III

Location +

Ascension iconRight ascension: 11h 5m 0.657s
Declination iconDeclination: 7° 20' 8.872'' (equatorial region)
Parallax iconParallax: 34.601
Distance iconSun distance: 94.263 ly | 28.9 pc
Star position
The position of a star tells us where it appears in the sky, similar to how we use coordinates like latitude and longitude on Earth. In astronomy, the three main coordinates are right ascension, declination and distance. .. icon More about Star position in StellarGuide

Basic characteristic

icon weight
Mass: 162 % M Sun
| 1697 M Jupiter
+
Star mass
Mass of the star Chi Leonis A is 1.62 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: 199 % R Sun
| 19.8 R Jupiter
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Star size
Radius of the star Chi Leonis A is 1.99 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: 7022 K | 1.22 T Sun
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Star temperature
Surface temperature of Chi Leonis A is 7022 K, which is 122 % 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: 1.4 billions years | 0.3 Sun
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Star age
Star Chi Leonis A is 1.4 billion years old, which is about 0.3 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: 9.9 L Sun
+
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): 4.6
Magnitude iconAbsolute magnitude (V): 2.3
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

Chi Leonis B

Red dwarf, High proper motion star

Basic characteristic

icon weight
Mass: 60 % M Sun
| 576.2 M Jupiter
 (estimate)
+
Star mass
The mass of the star Chi Leonis B is unknown. Based on its other characteristics, it is estimated to be about 60 % of the Sun's mass.

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: 60 % R Sun
| 5.6 R Jupiter
(estimate)
+
Star size
Radius of the star Chi Leonis B is not known. Its estimated value based on other similar stars is about 60 % 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 iconTemperature: 3800 K
 (estimate)
+
Star temperature
Surface temperature of Chi Leonis B is estimated to be 3827 K, which is 66 % 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

Photometry

Magnitude iconApparent magnitude (V): 11
Magnitude iconAbsolute magnitude (V): 8.7
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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Chi Leonis system structure

 Chi Leonis A
Chi Leonis B

More about Chi Leonis

       Chi Leonis can be found in northern celestial hemisphere, and it is possible to see it with naked eye. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
* chi Leo, χ Leo, 63 Leo, BD+08°2455, FK5 418, HD 96097, HIP 54182, HR 4310, SAO 118648, , Gaia DR3 3818309974360005888
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External sources
simbad icon
Simbad database (* chi Leo B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 3818309974360006016)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Chi Leonis system from the Sun?

The Chi Leonis system is 94 light years or 28.9 parsecs from the Sun.

What galaxy is the Chi Leonis star in?

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

How many stars are in the Chi Leonis system?

The Chi Leonis system contains 2 stars.

What type of star is the Chi Leonis?

The primary in the Chi Leonis system is a Yellow giant star.

What temperature is star Chi Leonis?

The primary in the Chi Leonis system has a temperature of 7022 K. Find out more about the temperature of stars in Stellar guide
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LP 551-13
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UCAC4 463-048275
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