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Pollux
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Star Pollux

Red giant Pollux is located 34 light years away from the Sun. It is a single star of spectral class K0IIIb, that has 191 % of solar mass. There is at least one exoplanet in this system.
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Sun distance
34 light years
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Pollux

Red giant, High proper motion star
Spectral class: K0IIIb

Location +

Ascension iconRight ascension: 7h 45m 18.953s
Declination iconDeclination: 28° 1' 34.316'' (northern hemisphere)
Parallax iconParallax: 96.540
Distance iconSun distance: 33.785 ly | 10.4 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: 191 % M Sun
| 2001 M Jupiter
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Star mass
Mass of the star Pollux is 1.91 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: 906 % R Sun
| 90.2 R Jupiter
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Star size
Radius of the star Pollux is 9.06 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: 4938 K | 0.85 T Sun
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Star temperature
Surface temperature of Pollux is 4938 K, which is 85 % 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: 0.724 billions years | 0.16 Sun
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Star age
Star Pollux is 0.724 billion years old, which is about 0.16 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: 32.7 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): 1.1
Magnitude iconAbsolute magnitude (V): 1.1
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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Pollux system structure

 Pollux
Pollux b 1.64 AU 731.2 M⊕ -

More about Pollux

Nearby star Pollux is is approximately 9 times bigger than the Sun and temperature on its surface is around 4938 K (4665 °C), which is about 85 % of Sun's temperature.
       Pollux 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
β Geminorum, 78 Geminorum, BD+28°1463, GCTP 1826.00, Gliese 286, GJ 286, HD 62509, HIP 37826, HR 2990, LFT 548, LHS 1945, LTT 12065, SAO 79666, * bet Gem
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External sources
simbad icon
Simbad database (* bet Gem)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)

Frequently Asked Questions

How far is the Pollux system from the Sun?

The Pollux system is 34 light years or 10.4 parsecs from the Sun.

What galaxy is the Pollux star in?

The Pollux is in the Milky Way galaxy just like the Sun.

How many stars are in the Pollux system?

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

What type of star is the Pollux?

The star Pollux is a Red giant star.

What temperature is star Pollux?

The star Pollux has an effective temperature of 4938 K. Find out more about the temperature of stars in Stellar guide
Class of stars Red giant
White dwarfs are the hot, extremely dense stellar remnants left behind by stars that originally had masses between about 0.5 and 8 times the mass of the Sun during their main sequence lifetimes. After exhausting their nuclear fuel, these stars shed their outer layers and leave behind a compact core. Although white dwarfs contain between roughly 0.2 and 1.44 solar masses, this mass is packed into a volume comparable to that of an Earth-sized planet, making them some of the densest objects in the Universe.
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