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Upsilon Leonis
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Star Upsilon Leonis

Yellow giant Upsilon Leonis is located 182 light years away from the Sun. It is a single star of spectral class G9IIIbFe-0.5 B, that has 258 % of solar mass. There is at least one exoplanet in this system.
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Sun distance
182 light years
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Upsilon Leonis

Yellow giant
Spectral class: G9IIIbFe-0.5 B

Location +

Ascension iconRight ascension: 11h 36m 56.940s
Declination iconDeclination: -0° 49' 25.496'' (equatorial region)
Parallax iconParallax: 17.970
Distance iconSun distance: 181.500 ly | 55.6 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: 258 % M Sun
| 2703 M Jupiter
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Star mass
Mass of the star Upsilon Leonis is 2.58 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: 1100 % R Sun
| 109.5 R Jupiter
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Star size
Radius of the star Upsilon Leonis is 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: 4842 K | 0.84 T Sun
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Star temperature
Surface temperature of Upsilon Leonis is 4842 K, which is 84 % 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 Upsilon Leonis 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: 56 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

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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Upsilon Leonis system structure

 Upsilon Leonis
Upsilon Leonis b 1.18 AU 162.1 M⊕ 385.2 days

More about Upsilon Leonis

Star Upsilon Leonis is is approximately 11 times bigger than the Sun and temperature on its surface is around 4842 K (4569 °C), which is about 84 % of Sun's temperature.
       Upsilon Leonis can be found in southern celestial hemisphere.
Other designations of this star
Ups Leo, υ Leo, 91 Leo, BD−00°2458, BD-00 2458, FK5 437, HD 100920, HIC 56647, HIP 56647, HR 4471, SAO 138298, 2MASS J11365692-0049259, TIC 49430557, TYC 4930-1093-1
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External sources
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Frequently Asked Questions

How far is the Upsilon Leonis system from the Sun?

The Upsilon Leonis system is 182 light years or 55.6 parsecs from the Sun.

What galaxy is the Upsilon Leonis star in?

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

How many stars are in the Upsilon Leonis system?

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

What type of star is the Upsilon Leonis?

The star Upsilon Leonis is a Yellow giant star.

What temperature is star Upsilon Leonis?

The star Upsilon Leonis has an effective temperature of 4842 K. Find out more about the temperature of stars in Stellar guide
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